two tourists on rental scooters arrived at the airport, one of them didn't even have a shirt on, and then proceeded to go park the bikes at a part of the airport where no one is allowed to park at all, get their belongings off the bikes and then just leave the bikes there.

There are cameras everywhere, so it's pretty easy to identify everyone and track them down, unless they don't want to.

To me, I think that all of these sorts of things should be handled on a case-by-case basis and not make some sort of broad changes that are going to hurt everyone just because of a few jerks.

I agree with you on that. No reason to take it out on everyone, just punish those responsible.