This “feature” was actually carried over from the Elicenser system. Trial licenses would appear in the license list seemingly forever. It’s been a while now, but iirc, at some point they became delete-able.
I always found it slightly annoying, but since it had zero effect on any functionality it was trivial enough to me to just live with it. It’s similar here, where the entries remain in the SAM list.
You can hide all non-activated licenses, of course.
It sounds like the program or content was opened, it looked for its license, didn’t find one, and displayed the error message.
Was it the expired trial licenses they removed?
The programs and content the you don’t have licenses for still need to be uninstalled or removed by the user.
May I ask you what product it is that prompts you to renew its license?