PI vs no-PI is a lot different than unsportsmanlike for rushing the field. In the first, they discussed and said no penalty actually occurred. What you are asking is for them to say, “technically a penalty occurred, but the official only called it because he thought it was meaningless so we’re going to pick it up.” Big, big difference. Those unsportsmanlike penalties get called all of the time in situations like that at the end of a game. This is the first time I’ve ever seen one almost impact the game. But officials call it all of the time. And they can’t just pick a flag like that up.