Because anyone who's actually a snob about a minimalist text editing experience is using something like neovim, emacs, or kakoune, not some notepad replacement.
Who’s thinking they’re a snob? Notepad is (or had been for a very long time? I don’t know what modern Windows includes anymore) included by default for PC users.
If it’s already there and it served the purposes OP needed, they would’ve had no reason to look for an alternative. OP may not know about Metapad, especially if they aren’t “a snob about a minimalist text editing experience,” they just liked a minimalist and ubiquitous tool that worked well for them until it showed clear signs of AI encroachment.