[mindcrime]

but Prime and Netflix don't allow you to watch high-def content on Linux.

I don't know (or care) about "high-def" but I can assure you that Prime and Netflix work just fine on Linux.

Netflix supports UHD on computers

That's not really relevant to me. I don't care about UHD, I just care about being able to watch. I'm not that picky.

Peacock, on the other hand, doesn't work at all.