I think some people are confused. Windows VMs still work perfectly fine in Qubes OS with no security problems. It’s only Qubes Windows Tools (QWT) that currently have a problem. If you can live without the special features QWT provides (e.g., easy copy/paste and file transfer), you can simply use Windows like any other HVM with no problem, just as you have always been able to. (For example, to work around the file transfer part, you could simply use your own encrypted file transfer method to transfer files over the internet to yourself instead, like 7zip-encrypted files on cloud storage or something.)