I just updated to 12.3.1 A-OK, so it seems that they've patched the bug!

Mine also bricked (16in 2021 MBP). For context, I updated this past Monday, so not on Beta but official release. I sent it in in January for water damage repair. Genius bar sent it out and was "repaired" in a day and sent back. All working now, except it's stuck not updating, and instead when I go to update and restart, it doesn't do anything, despite it looking like it installed the update... super weird! Tried Apple Config 2 at home and in-store, and was bugging out or erroring out every time. Hopefully, there's a fix for this soon. Tried Universal Control on my MBA, and it's AMAZING!

Mine also bricked (16in 2021 MBP). I sent it in in January for water damage repair. Genius bar sent it out and was "repaired" in a day and sent back. All working now, except it's stuck not updating, and instead when I go to update and restart, it doesn't do anything, despite it looking like it installed the update... super weird! Tried Apple Config 2 at home and in-store, and was bugging out or erroring out every time. Hopefully, there's a fix for this soon. Tried Universal Control on my MBA, and it's AMAZING!