There's a way more popular thing that breaks commandline snippets: auto-replace from `--` (double hyphen-minus) to `—` (emdash), in many chat applications and, particularly, on Mac OS.
The argument for having such problem is the same: "everyone is using the software wrong", but alas, some people just forget to backtick their snippets (when that's even supported).
So it's not just GNU projects; it's GNU projects where there's a good chance to actually fix such problems despite the opinion of some code authors.