Yeah, "the internet doesn't forget" is rather uddated. The internet only remembers tactics to extract money. If there is no money, you'll get no service mist of the time.
If you want to be very sure: no Internet connection. There are some ways to escape a VM, but its not very likely.
Maybe, but the screenshot stuff will limit the professional use of win 11 I hope, which would make adoption easier
There is quite a variety of services like that, curiosity stream is another one.