The issue is countless teams had opportunities to do this in the past - they all knew it was an option - but they chose not to. Then suddenly one team decided “well there’s no rule…” even though it was clearly established that everyone agreed not to do it. It’s not like they discovered something new, they just broke convention with no warning at a very consequential time after many teams undoubtedly could’ve done the same to them. It’s dirty.
We all saw this on the school yard as a kid and none of us appreciated it. It’s annoying to have to enshrine literally every situation into the rules. Just play the game as intended. This is part of what has made American football become less fun to watch (besides learning about CTE’s…). Soooo many rules, constantly stopping play to assess every little mm of the play. It’s boring as hell for all involved. It’s why you often hear “just let them play!”
I actually suspect they didn’t know. When a sport is played one way for 200 years, you don’t read the rule book to check, you just copy what everyone is doing!
On the local elementary school field, sure.
At the highest levels of the sport, they know the rulebook like the back of their hand.
I disagree: players rarely know the rules in-depth. A great example is a YouTube video I watched where a Premier League and World Cup referee told the camera that most players didn’t know where they needed to be placed for kick off and that they needed to kick the ball forward. It was so bad that IFAB changed the rules to allow kick off to backpass because it was causing so much conflict at the start of football matches!