My Take

[CuseOnly]

It's all about security. Anybody coming back in needs to be re-screened.
Which means that all the staff that do that, would need to remain in place for the entirety of the event.

The vast majority of venues already have similar policies - or will soon.

You're at a football game. Be AT the football game.
Smokers - maybe seeing that you can't live without cancer sticks for 4 hours, will make you rethink your life choices.

The "manning the doors" all game is a cop-out. They have to be manned anyways for late arrivals and such at the very least with a skeleton crew.

They don't "lock the gate" and not let people out or in after the game starts.

 

[CuseOnly]

不，不，他们不是。

Lol, hysterical!!