That’s cool, whatever works for you.
I just made a bootable backup of a Monterey install using the legacy approach. I moved from a Samsung drive (with slow macOS boot times) to a WD SN750 NVME ssd (in a thunderbolt enclosure). And it worked just fine. My boot time dropped from over 90 seconds to 8 seconds. You just have to let it erase the destination disk fist.
I also used CCC yesterday to transfer my user directory (on an old MacBook Pro) to another disk temporarily so I could fresh install Big Sur 11.6.1. CCC can copy whole drives or just certain folders. Your choice.
I’m using open core legacy patcher on my old MacBook since Apple cut it off at Catalina! I never thought I’d be using OC on a real MacBook, but Big Sur is running beautifully. Wifi Bluetooth intel hd 4000 acceleration all working. I needed to use CCC to copy my files because the built in macOS Finder wouldn’t transfer my 400,000+ files that I accumulated since 2012.
I haven’t had any problems with CCC and I’ve been using it for years.
Well, I really, really do wish that people would stop repeating that you must use the legacy approach with CCC. I have been using CCC for well
over 10 years. I
know how to use it, and how to use the "legacy" approach. I'm just saying its not reliable, and is not going to be around much longer.
A quote from Mike Bombich of CCC: "....APFS replication utility completed the task, but then
failed to remount the destination. CCC tried to remount the destination as well, but also failed. The backup is whole, but CCC was unable to wrap up the final details of renaming the destination back to "imacProBkUp", and restoring a custom icon, if applicable. This is why CCC recommended that you erase the destination and try again."
Which I did, and it failed again, on a different disk. So clearly, it failed.
Furthermore, Mike pushes
hard to not use the legacy approach "I agree! Please, stop doing it this way! Don't make bootable backups, make Standard Backups instead (i.e. the "default settings")".
And my final point is: soon, you will have no choice, you will not be able to use CCC to make bootable clones. I believe in preparation, and so I have taken steps to protect myself and my data.
What you, or Casey chooses to do, that's your choice. All the best.