The description of how the message can be reproduced is correct.
But:
Once the error message was displayed and I restart my IMac, the IMac freezes! However, only on the Intel system. On my AirBook with M2 chip, I don't have the start problem.
So I'm assuming it's not just noise.
But thanks anyway for your reaction and answer to my question.
I have already opened a support ticket, maybe I can get some help there.