I don't think that play is okay in their coaches minds

I think that is and pretty much has been for years a dirty block. I would imagine that they would acknowledge that. I honestly don't recall too many of those types of illegal blocks over the years. I might be mistaken. If we find that they do that shit all the time and they haven't been disciplined and we keep them on the schedule, truthfully that's on us.

Now, do they fire off and cut in the clipping zone (legal)? Yes. Does your defense need to be ready for that? Absolutely. Should a fundamentally sound defense stop that type of block with relative ease? Yes.