Your statement contains several severe logical fallacies, which I will attempt to explain.

"Devil is a concept invented by the ego to avoid responsibility"
The devil, at least according to the Bible, has nothing to do with avoiding responsibility. In fact, the Bible specifically emphasizes that we ARE responsible for sins we commit.

"We should stop pointing fingers around and blaming others, real or imagined"
I absolutely agree! We ourselves are absolutely responsible!

"Enlightenment is salvation"
From what?

I challenge you, find one error or inconsistency in this book and you'll be a rich man: https://www.bible.com/bible/1/GEN.1.kjv

Thank you for your time,
E.S.