During Covid lots of sorts were broadcast without any spectators. I found that it increased my viewing pleasure. No screaming crowds trying to make the most noise with drums (soccer), no altercations, no people throwing things or making annoying noices (MMA), no crazy people next to the road pushing cyclists.
Just the people doing the sport, I can hear them shout, swear and get punched. I can see bike racing without fear a crazy fan will jump in front of the pack for a photo for their grandma.
I don’t need an audience to get hyped or to distract everybody with jeers and racist shouting. For me the fans are the worst part of the sport. I don’t enjoy watching them, I want to see the athletes doing their thing.
You’re cherry picking the literal worst aspects of that though. I’ve been to loads of sporting events and there were no riots.
Heck, every single weekend millions of people go to watch their teams play football and it literally never breaks out into a riot.