Sorry to resurrect an old thread.
I was working on a Ryzen 5 1500X PC and after updating the BIOS to the latest version (F53d on a Gigabyte A320M-S2H), absent mindedly booted the Win 11 23H2 installer on USB. To my surprise, I didn't get any warnings about an incompatible system and it's installed and activated just fine.
It's also downloading and installing updates just fine too.
Screenshot attached (Device Name and ID obscured for privacy)
As at today's date, the MS Compatibility page doesn't list the 1500X as being officially supported.