This is actually a really good point; I tend to forget about Darwin. If I was in a situation where I owned Apple Silicon, I'd definitely want to look into this

This is actually a really good point; I tend to forget about Darwin. If I was in a situation where I owned Apple Silicon, I'd definitely want to look into this. While I have my own flavor preferences, I'm generally happy to work in whatever Unix environment is available to me. Thanks for bringing this up; it may become important to me in the future. But wmf is right; a critical mass of people want Linux and accept no substitutes. To a lot of people, especially younger folks, "Unix" means Linux, and that's that.