Switch 2s architecture will probably be very similar, so Nintendo might have done it to protect the next gen.
Forks are meaningless.
Unless a team steps up to continue development, the project is as good as dead.
I can still play emulated games right now, so its alive and well for my purpose (playing games that I fucking paid for without stutter at 60fps)
Are there any that actually have a new team behind them that would presumably add Switch 2 support?
It is working. It buys them enough time to sell enough new hardware and games. It will take a really long time until development picks up again, since basically every developer associated (not necessarily every one who has contributed to the project) with the yuzu group can no longer legally work on that project. So basically a lot of expertise is lost.
There are literally working forks right now. Switch 2 support is different though. We'll have to wait and see how that turns out.