Unlocked and flashed the 2022-06-30 RETUS update. Booted into stock to provision the radios and check on visual voicemail (more about that below). I noticed the same behavior as before wrt the oem unlocking, otherwise didn't stay here long.
Then flashed a DIY unofficial build (updating the rollback index to 14 from 13). Booted fine so i went ahead and re-locked the bootloader. No issues - I was able to toggle the oem locking to allow (after locking the bootloader) as before.
Restored a backup via seedvault and went through a couple of hours of additional tweeks that seedvault misses (some of which I don't expect seedvault should backup like firefox, nextcloud, davx accounts, k9 email passwords, etc).
The FM radio is back! No need for me to apply hackish patches - thank you for that.
The (new to lineageos) moto camera seems to work well. Hedgecam2 filled a need, but I think I'll switch to the lineageos provided moto camera. Thank you for that.
I have visual voice mail without having to use my carriers bloatware app! For the longest time (years), I could not get visual voicemail working and so just lived without it. I'm not sure what brought it back. Some bug fixed in the updated stock rom radios? Bugs fixed in the updated blobs? As mentioned above, I did use visual voice mail on the stock rom with the thought that maybe something needs to be provisioned for it after updating the radio. Any event, it's nice to have the option to use it.
Very pleased atm. My thanks to those that made this possible.