I have never heard any rigorous scientific justifications for literal creationists though.
I'd agree that origin science is not testable but you can drawer FAR stronger inferences for an evolutionary origin than otherwise.
I can't take the time and space here to present a solid defense of creationism over evolution, but there certainly is an abundance of scientific evidence supporting the former over the latter. If it doesn't line up with popular secular theology, it's labeled as pseudo-science to be ridiculed and rejected. However, I might briefly demonstrate that some of the greatest minds of science, fathers and founders of the science disciplines we value today, were in fact Bible believing creationists who publicly opposed popular evolutionary theory. Here's a couple quotes to consider:
Isaac Newton, potentially the most influential and respected scientist of all time, published a document later translated as
The Mathematical Principles of Natural Philosophy which is considered the greatest scientific work in human history. In it, he detailed the universal law of gravity and 3 laws of motion. He was a serious Bible believing theologian who wrote extensively about the compatibility between God and science, believed in the Genesis creation account and specifically opposed popular evolutionary theory. One of his famous quotes states: "
Gravity explains the motion of the planets but it cannot explain who set the planets in motion. God governs all things and knows all that is or can be done."
John Ambrose Fleming, considered the father of modern electronics, argued that "
evolution, like all naturalistic theories of origins, has failed to account for life, the mind, and humankind." He reasoned that, for a theory to be true, it must “not fail in critical places,” as does evolution.
I'll add Robert Boyle who made major advances in chemistry and physics; William Thomson who formulized the scientific laws of energy; Blaise Pascal, extraordinary mathematician who developed the calculating machine and theory of probabilities; James Maxwell, famous mathematician who contributed significantly to 20th century physics; Michael Farday, history's most recognized experimentalist with electromagnetism and electrochemistry; and Nicolas Stone, the founder of modern geology.
These men who made the discoveries and laid the foundations of our modern science today were not practicing pseudo-science just because they believed in the Bible's accuracy and authority. Rather, like creation scientists of today, they observed and interpreted science with an objective view that did not automatically exclude any nonmaterial evidence. Understand, the naturalistic restriction that our culture now places upon the term "scientific" is only a recent phenomenon of the late 20th century. It's a sign of the secular times, but it has not changed reality.
So is there rigorous scientific evidence for creationism as literally detailed in the Bible's Genesis account? Of course.
Unlike evolutionary theory, the creation model provides viable answers to the beginning of the universe that adhere to the scientific First Law of Thermodynamics.
Unlike evolutionary theory, the creation model provides viable answers for the fine tuning of the universe that adhere to the scientific Second Law of Thermodynamics.
Unlike evolutionary theory, the creation model provides a viable answer for the origin of life that adheres to the scientific Law of Biogenesis.
Unlike evolutionary theory, the creation model provides viable answers for the DNA coding and complexity of biological and biochemical systems that adhere to informational science realities.
Unlike evolutionary theory that holds onto old earth, uniformitarianism principles that counter actual cataclysmic geological evidence, the creation model offers clear scientific compatibility.
I could go on, but my point should be clear in answering the charge. There's a preponderance of solid, scientific evidence supporting the existence of God and the Bible's Genesis creation account - in addition to the historical, archaeological, scientific insight, prophetic, and manuscript authority evidence for believing what the Bible says. Admittedly, I've only listed points here and not defended them, but for anyone wanting to study the matter honestly, such details are well presented on various creation websites. The truth of creationism is no doubt overshadowed by the volumes of evolutionary material, but that doesn't dictate truth. Several examples of that point could be made from past history.
Sadly, evolutionary theory is accepted by the masses today that have been indoctrinated by the secular educational system, government, media, museums, parks, and culture. I was there myself until I studied the topic later in life from different sources - sources that don't automatically exclude the supernatural from all reality. In summary:
For the Bible sceptic, there's massive secular material and cultural pressure today to justify an evolutionary world view. A close look though will reveal that the teachings and conclusions do not accurately reflect the underlying science claims. In fact, several known false teachings are still being printed in school textbooks today, perpetrating what I believe is the biggest, most influential lie in modern history. For those that reject God and want to justify their world view, evidence and truth don't matter, particularly when it's the popular point of view.
For the Christian though that respects the Bible's authority as Divinely inspired and the foundation of their faith, there is no room for popular evolutionary thinking. To embrace both a naturalistic unordered process of chance with a supernatural ordered process of purpose is irrational. The two opposing views cannot be reconciled, though misguided seminaries, churches, Christians, and Catholics have been trying to do so for decades. We'd all do better to pursue science with the same intent of previous great scientists, understanding it's a discovery of how God created and runs the world, not a mandate to explain the world without God's existence.