I haven't read all 13 pages of comments - just skim read through - but I'll chuck my 2p's worth in anyway.
I'm a web and app developer. I use Windows for testing websites on Windows browsers and also to access SQL Server databases using SQL Server Management Studio. That's it for Windows. I use Parallels Desktop running Windows 10. It's a convenience to have both running on my iMac Pro and sharing the clipboard is handy, there's no doubt.
There's no way this will stop my next computer being an ARM based Mac, however it does leave me with a question mark over how best to organise my workflow going forward. Having another machine (even a cheap Windows laptop) would be no great problem. The issue to get over (for me) is making transferring things across from Windows to Mac quick and easy. Sure, I can save a file to my network - but the convenience of using the clipboard when I need to take something back or forth between the two operating systems is a huge time saver. I see no obvious way to resolve that.
Not a deal breaker by any means. The switch to Apple Silicon is a very positive move. It'll just throw up little gotchas that we need to find a workable solution for.