Good grief.
The violation for leaving the floor is obviously meant to address situations where an offensive player goes OOB to gain an advantage.
The rule hasn't changed, just the penalty. Did you previously ever make this call? Are you suddenly going to go out and call this 10 times a game now, just because the penalty changed?
Does it say that it addresses the offensive team only? No. But Judas Priest, can we use just a little bit of common sense here?
Stop making things harder than they actually are.