Apparently the order was only shared once, during an offhand meeting, in a period of under 90 minutes. Supposedly at the Wannsee Conference.
Heydrich blames Eichmann (though his secretary since he was assassinated) but there is no document and Eichmann blames Hitler but again, no document or proof, and Eichmann's "confessions" are highly suspicious given their circumstances.
Non-protestants do not, we just have a prohibition on murder. If we have done anything wrong, it was a failure to forbid the jews from settling in Europe. This resulted in the ashkenazis when the jews mixed with Europeans.
Well, I am not religious. I'd gleefully exterminate every single nigger and kike. Not a single shred of regret, only the sense of pride to have done what needs to be done. And the golden age that would follow would merely reinforce that notion.
I have exterminated hundreds of wasps in an underground nest, and it took quite some time and effort. Nobody thanked me, but the wasp problem in the area is solved since then.