Apple appears to be deliberately blocking iMessages from being delivered to ~5% of Beeper Mini users. Uninstalling and reinstalling Beeper Mini fixes the issue.
Affected Beeper Cloud users - please contact Beeper Help. We can fix it very easily for you if you let us know.
I wasn’t sure what to expect.
I was wrong about them not coming after Beeper Mini, since they didn’t do anything about Beeper Cloud or AirMessage.
Definitely interesting to watch.