There's a roughly 20 year history of games and animations built for Flash. It would be a shame to lose them indefinitely.

I sometimes hope that Microsoft will release, for example, a Windows XP VM in an app. Perhaps a versions that's limited to connecting to the Internet Archive to play archived flash projects.

Should be able to combine Flash Player an older Firefox, ReactOS, and v86 to accomplish what you want.

You don't even need a windows clone for that since Adobe is still releasing linux binaries. Just use a relatively recent debian/ubuntu distro.