I find it funny how this thread is a continuation of comments not understanding the previous one :-).
1. chrysoprace says "well, I'd rather use GrapheneOS than PixelOS"
2. jnkl notes that actually, if you run GrapheneOS, it means you have a Pixel, and therefore you don't need PixelOS (because you have a Pixel!).
3. hurfdurf does not understand the comment, and plugs a link there because I assume it's too difficult to just write "actually, soon there will also be Motorola phones that support GrapheneOS". Which misses the point, but is factually correct.
4. nicce apparently understands jnkl and play son the fact that hurfdurf was maybe just nitpicking (but really, I think they did not care about understanding the comment they were answering too, mostly just wanted to mention the Motorola stuff).
5. microtonal does not understand the comment and goes on explaining why GrapheneOS only runs on Pixel (and soon the Motorola) phones.
I guess that's life: half of the time, people don't even try to understand what the others are trying to say...