Sigh. So, https://github.com/neovim/neovim/pull/32013 (released in 0.11.0) made Neovim display stderr highlighted with ErrorMsg.
Which _might_ be considered a good thing, but CLI applications use stderr for all sorts of things, not just errors. For example, `git push` will print status to stderr by default.
It completely defeats the purpose of highlighting errors in red if non-errors are red as well.
Yes, I'll probably open an issue about that. (Edit: done, https://github.com/neovim/neovim/issues/33405)
