"Was Gregor Mendel a Satan worshipper in a Christian's clothing?"
Of course. I thought this was common knowledge.
"Genetics is a field of "science" that has no real merits."
Absolutely none, you're right. So long as you ignore quite a large portion of biology, medicine, the pharmaceutical industry, agriculture, forensics and so on.
Other than that, I agree with you completely.
"It was only a stepping stone for Satan to create the lie that would turn the most amount of people away from God, the idea of evolution."
Yes. Genetics was the stepping stone to evolution despite the fact that DNA wasn't discovered until a decade or so after Darwin published his work. Not to mention that the actual idea of evolution goes back at least to the ancient Greeks.
"Genetics was created by the Devil to corroborate evolution."
Strange that your omnipotent god could do nothing to thwart his dastardly plan.
"Gregor Mendel, a supposed Catholic "Christian," is considered the "father of genetics." Why would an actual Christian obey the Devil's infernal will by creating a lie like genetics?"
Good scientists follow the evidence wherever it may lead. Despite their religious leanings most recognize that reality, rather than religious superstition, is where truth lies.
"That makes me suspect that he was not a Christian at all and only pretended to be."
I'll be he even put sugar in his porridge too, the bastard.