It's certainly understandable why neither of those OS's can be considered officially compatible.
In my experience, it seems to be working on Windows 11, though I've not done any testing that would be considered thorough, and have only tried it on 2 standalone PCs without any sort of output or hardware attached.
MacOS Monterey, on the other hand, does not start at all beyond the little launcher window, so I'd say that version is not functional.
Looking forward to the next version, and beyond.