As you said, main problem is relating on old stock and that stock at some point is going to run out, though I think they still make new 2,3 & 486 processors though this is usually for industrial embedded applications.
I think there’s a niche for those kind of things though!
Agreed, Threads doesn’t even need to be federated either really, it’s just an excuse, I like that they are sticking it to Musk, that nob head needs his comeuppance.