The beauty of it is that it's an economic argument... in order to make something impervious to grinding, you'd generally have to make the thing too expensive for its primary purpose.

The locks on these things (and other things) are 99% of the time abysmal.

I had a cop help me try to cut an unlabeled bike lock off my bike.

The business had double-locked it to a rail I'd locked it to, because apparently that was forbidden. Unfortunately, there was no sign, so I had no idea.

Cop and I worked on it for awhile, then he gave the security guard an earful for not leaving a message.

Side note: of all the bike locks, braided are by far the most annoying to cut, because they're impervious to bolt cutters.