Why did the NFL hit Isiah Pacheco with one of the season’s biggest fines for a routine helmet collision?

Running back Isiah Pacheco was fined $46,371 for impermissibly lowering his helmet on a hit, a penalty not called during the game. This retroactive discipline, impacting other players too, highlights the NFL’s strict enforcement of helmet contact rules, raising questions about player responsibility and the league’s policing of instinctive plays.