Of perfectly moderate Rust users get annoyed with C zealots?

That might be an argument if those C zealots were trying to add their language to a Rust project. Don't play in someone else's back yard and then complain that their are not pampering you enough.

I don't understand how this is related to what I said.

>. I don't know why, but either zealots choose rust or rust induces zealotry.

That is actually quite well put together. May be The language that introduce absolute control also induces zealotry and produce zealots.

However that doesn't happen with Ada. So that cant be the full explanation.