There was an argument that vaccinated people couldn't pass covid on to others but as that had been shown to be nonsense there's no longer an excuse for a mandate.

This is why the medical mandate is equally stupid. If the shots don't prevent transmission (which even Pfizer CEO acknowledges they don't in Omicron), then there is no "public health" argument left. It makes zero difference as a matter of interaction of people when the shots have no effect on whether one person passes the bug on to another. Forcing these shots thus forces all the adverse events while having absolutely no effect whatsoever on the trajectory of the virus.