Making a Bootable MacOS clone is essentially dead with Big Sur?

I’ve always used SuperDuper to backup my boot volume as a bootable clone drive. It broke under Big Sur. We’ve now been sitting since May with a SuperDuper beta that claims to be able to do this but there are still some issues. I’m not one to run a beta of anything especially something as important as cloning your boot volume.

What have you folks been hearing about this? Right now in addition to Time Machine I’m copying off my high-level folders, Pictures, Documents, etc. but being able to boot from a clone has been very useful to me over the years. I hate to see that go.