Unless the platform that hosts it, has made the same uncompromising decision, then of course. It would be like hosting an app that freely declares it will host viruses on your platform that scans for viruses. They're telling you upfront that they have no intention of following your platform rules.

Not accidentally letting a few slip through, not being overwhelmed by scale and doing a crappy job, but as a point of principle not following the rules you are trying to enforce.