Honest opinion needed

So I have a 2 month old who loves his boppy (round pillow that I put on the couch and he lays on it.) He absolutely adores it and it keeps him calm. However, I’ve caught my husband has using it as a foot rest. Like he literally lays on the couch and put his feet on hit. I’ve explained that it bothers me and I don’t think it’s a good idea especially since our baby sleeps on it. Well today he did it again. All I said was “can you not use the boppy as a foot rest” and he caught an attitude.

Any advice?