Against my better judgement...
If you have at least graduated from High School (I don't know your age) you would know that a baseless claim is one where you assert something like "Freemasonry is Satanic" without offering any "basis" that is "evidence" for the claim.
So, now we've devolved to name calling? Whose the immature one? I am actually a pastor and a senior software engineer. You attack my intelligence while you yourself have engaged in at least 3 logical fallacies.
Ad Hominem Fallacy - If you have at least graduated High School you would know...
Straw Man & Appeal To Ignorance - Twisting my statement (which should completely valid to express) expressing my opinion and experience into something it wasn't then requiring proof to fit the narrative you created.
It is no small thing for a Christian to accuse many thousands of fellow Christians, pastors, priests, and leaders of being followers of Satan without being willing to offer any proof or a single stitch of evidence. I've accused you of nothing other than being unwilling to tell me a single reason why you know/believe that Masons follow Satan.
So, where is your proof that there are thousands of Christians, pastors, priests and leaders actively involved with freemasonry? You make a bold declaration of all of these people's affiliations without a single stitch of evidence to back it up?
As for your proof on Masonry, as a pastor I cannot share what others have said to me in confidence or what they have experienced during counseling sessions, something you should know better than to demand from anyone, pastor or not. However here is a statement that is public from a former mason, Edmond Ronayne:
"All my experience in and out of Masonic Lodges has gone to establish the fact in my mind that Freemasonry, in all its departments, is the most corrupt and wicked, and contains the greatest amount of falsehood of any other institution on the face of the globe. It is positively and absolutely selfish in every single element of its pagan composition, and can truthfully lay no more claim to charity, benevolence or goodness of any other name or description than could say, the heathen organizations which Christian civilization has long since banished from the world"
Further:
The secret name of the Deity of Masonry is JAHBULON
JAH = A Hebrew shortened word for Jehovah
BUL = Syrian word meaning "Lord" or "Powerful"
OH = an abbreviation for the Egyptian god Osiris, god of the underworld
Powerful Lord of the underworld who wants to be Jehovah (who does that sound like?)
It's not proof, but it is evidence that completely lines up with my personal experience.