My initial thought is definitely yes for the Steam Machine, and maybe yes for the Steam Frame.
All devices are Valve made hardware running steamOS, so I would think a lot of the discussions/content would apply to Steam Deck. This also isn’t a super busy community, so I wouldn’t be that worried about Steam Deck specific content getting buried.
The Steam Frame is a bit more iffy than the Steam Machine though, there’s a lot of experience differences between the Deck/Machine and a VR device, so there will be larger differences. Also the Frame has ARM hardware and has to use an additional x86 to ARM compatibility layer for games running on it, so we’ll probably see some unique compatibility bugs for it.
Overall though I just want to hear everyone else’s opinions on it.
Personally, I like the idea of becoming more of a “Steam Hardwares” community, as them being all kinda niche but close in scope, they shouldn’t conflict with each other nor turn the community into a too generalist one.
FTFY