> Support from professional software vendors [..] and Nvidia could be better, admittedly, but these restrictions aren't very relevant to me.
Quality of support from Nvidia on linux is the reason that I went with AMD for my linux work+gaming rig. That's why probably Valve chosen AMD too. As amount of linux gamers increases, maybe Nvidia will see the light too. For me, linux+AMD+Steam stack "just works".
Nvidia has always had a hard time maintaining good relationships with partners (see the whole Apple fiasco in the early 2010s), their Linux support is anemic and now they're gorged up to the gills with stupid AI money.
They probably don't even bother picking up the phone when Valve calls. Only AMD will sell you an integrated CPU/GPU system with the power envelope needed for modern games.
Quality of support from Nvidia on linux is the reason that I went with AMD for my linux work+gaming rig. That's why probably Valve chosen AMD too. As amount of linux gamers increases, maybe Nvidia will see the light too. For me, linux+AMD+Steam stack "just works".