Active thread here, discussing the issue in more depth:
https://bc1-noiap-ae.staging.lb.open.platforum.cloud/threads/infotainment-system-caput.869/
As I reported there, Honda knows of the issue, which they believe to be software related (no surprise). They're going to issue a software update once they have a fix. In the meantime, they say to do a "hard" reboot by either disconnecting the battery or removing and replacing the 15-amp "Radio/USB" fuse in the engine compartment. The latter is the easier to do, but I'm likely going to purchase a USB keyboard since that is easier still.
Strangely enough, Honda doesn't seem to be aware of the Cntl-Alt-Del reboot, which I think most folks would prefer over messing around in the engine compartment.