The difference is that evangelicals hold positions that are necessarily harmful. They're homophobic and transphobic, they don't believe in women's bodily autonomy, and they promote anti-science teaching in schools.
The problem with evangelicals isn't that they evangelise. It's what they evangelise.
Again, really don't care about the reasoning behind it, my stance is, without any ambiguity, this "I find devout athiests to be as or even more annoying than devout Christians/catholics"
This is only possible in an environment where religious people are causing harm. Because "devout atheists" (which is just a nonsense statement. Perhaps you mean "vocal atheists"?) only become so as a direct reaction to the harm caused by religious beliefs.