The UTF-8 BOM is especially bizarre because UTF-8 is completely endian-agnostic (so this "UTF-8 Byte Order Mark" is at most an indicator that this file is UTF-8 encoded, but guess what? Outside the Windows bubble, all text files are UTF-8 anyway).
Personally I'd like a world where Unicode gave up all the compromises that come with supporting UTF-16. But presumably burning all your early adopters is not a winning strategy.
This topic is so old that most early adaptors probably have retired by now ;)
I remember when Windows gained experimental support for a UTF-8 locale usable with its 8-bit APIs. I used to run it at work; it had some issues at first, but most got shaken out pretty quickly. I don't know its current state, but that's probably the best route to UTF-8 on Windows if MS would lean into it.