Originally Posted by JamesNoBrakes

I see it as the Px are not following the FAs instructions, which is enforcible, but if it's never enforced, what good is the rule? It's only going to get FAs and pilots in trouble, and no one else.

It's a catch 22, there's an enforcement for pilots "taxiing with passengers standing" in the FAA order 2150, but no established way to transfer the risk to the passenger and not hold the rest of the flight hostage. Passengers don't listen to FAs and the flight crew because there are no consequences (unless it's something affecting the safety of everyone else).