> Why is the remedy not simply ejecting the offenders?

Because if the situation is so heated up to warrant an abort, you'd need security staff or even riot police to yeet the offenders.

And no, I'm not joking. Private security staff ain't gonna break up a mob of 40 people bashing each others' heads in [1], and when it's 70 people involved [2], you gotta pray that they've KO'd each other out because even riot cops won't break up a fight club that large.

[1] https://www.swr.de/swraktuell/baden-wuerttemberg/heilbronn/m...

[2] https://www.br.de/nachrichten/bayern/erlangen-massenschlaege...