Sure, they can say that. And if they are a big company that owns hundreds of thousands of unrelated domains with no apparent email traffic, it would be pretty

Sure, they can say that. And if they are a big company that owns hundreds of thousands of unrelated domains with no apparent email traffic, it would be pretty obvious that it's untrue. So sure, a lot of small bad actors would get away with it. But it would could potentially take out the biggest bad actors.