Almost rode out the LTS period of Debian 10 for this server to the very last moment, but finally got my lazy ass to in-place upgrade to Debian 11 today.

Immediate breakage: 0

Debian 10 was a wonderfully low-maintenance release all the way from 2019 until today. Thanks Buster!

Might move on to 12 from here soonish after the dust has settled, I like the thought of not having to care much for another 4 years ...