It is not perfect , for example it has missing one vers in psalm which has one vers for one letter in Hebrew in order as they go .
We know this because of dead sea scrolls
There are many reasons that the KJV is divine in origin.
#1. God's Word claims that it is perfect (Psalms 12:6) (Psalms 119:140) (Proverbs 30:5) and that it will be preserved for all generations (Psalms 12:7) and it will stand forever (Isaiah 40:8) (1 Peter 1:25). So there must be a perfect Word of God for our day that we can understand in a modern day world language. Well, that is if you believe the Bible when it says that His Word will exist for all generations, and that it is perfect. Seeing God's Word was preserved within the Greek (Which was once a world language), it makes sense that God would do that again with the world language of today (Which is English). A person who understands this truth and accepts it will quickly come to discover that the KJV is that Bible in time (by examining the evidence).
#2. A side by side comparison of the KJV vs. Modern Translations shows that the KJV is superior in defending the Trinity, holiness, Christology, the atonement, etc. In fact, the devil places his name within Modern Translations in several places and it is actually really disturbing. The Modern Translations can be traced from the corrupted Westcott and Hort's Critical Text. They were not even true believers who were into the occult. The KJV is taken from the Textus Receptus line.
https://av1611.com/kjbp/charts/themagicmarker.html
https://av1611.com/kjbp/charts/themagicmarker2.html
#3. Biblical Numerics time and again proves the divine nature of the KJV. If you ever want the facts about the KJV, just watch a video by Mike Hoggard on a certain Bible number. The number 7, the number 8, the number 9, the number 66 are all some really good studies. For me, these kinds of studies show me that God's Word is no accident. But you can remain in the dark and take the blue pill and not check it out and just believe whatever you want to believe. I mean, I watched your video, and I disagreed with it. I think it is only fair you should check out a video that I have put forth. Check out the number 8 video by Mike Hoggard. This one totally blew my mind.
#4. The Most Attacked Bible.
The Bible that stands above the rest and is attacked the most is the KJV. For people break into banks because they have value within them. So men try to attack the KJV because it has value. Christians have even said I was a heretic for believing in the KJV and said that I worship the KJV. But nowhere do I bow down before the KJV as if it was a magical book. I simply believe it is a love letter from God (Who helps me to worship Him in spirit and in truth).
#5. God reveals amazing hidden truths to believers who trust in the KJV.
For where others see contradictions in the KJV, God reveals to those who trust in His Word the actual true meaning where there is no contradiction (With the Word of God breathing in perfect harmony). Many contradictions over the years that people have thrown at the KJV I have resolved with the help of the Lord and in searching the Scriptures. My discoveries blew my mind because I was patient and waited upon the Lord and believed in His Word by faith.
In fact, the KJV is why I am a believer in Jesus Christ. These kinds of things (you mention) are a joke and an attack upon God's Word. Psalms 145:17 says God is righteous in all his ways (Modern Translations say that God is gracious in all his acts). The rendering God is gracious in all his ways is not exactly true because sometimes God executes judgment and wrath.
Also, with the Dead Sea Scrolls, there are a few problems. Problem #1: How do you know which Hebrew manuscripts this heretical cult (called the Essenes) took with them when they left the temple of Jerusalem and went to the area of the Qumran caves? Problem #2: How do you know the methods they used and the accuracy with which they copied and recopied those manuscripts? It just so happens that the Dead Sea Scrolls, probably 99% of the time, did concur with the Hebrew text that underlies the King James Bible. But, in the places where they don't, we should stick to the Masoretic Traditional Hebrew text.
Source used for the last paragraph of my post:
http://www.mountainretreatorg.net/articles/super.html