So, ban all competitions in general? That sounds like a fantastic idea... gonna solve lots of problems with that one.
Football, both kinds, have lots of permanent injuries throughout the body and brain. If you want to talk about rewarding people for pushing themselves to the extreme, those are far better examples than free soloing.
It's interesting when people are fine with stopping passion sports like climbing, skateboarding and now sledding, but they're too scared to say the same about the 800-pound guerrilla, money making machine sports with a lot more TBIs and deaths. Especially since a lot of people go for football more for the reward than for the actual passion.
Again, it's not like anyone participating in any of these sports are unaware of the risk. An argument might exist for 20-30 years ago. But not today. That takes flat-earther mental gymnastics to think they aren't putting themselves at risk. But at the end, if you're complaining that, "These people push their body's too far", that's not you caring about their well being. That's you seeing your own weakness, laziness and cowardliness to attempt the same feat. These folks are going to push themselves some way, some how, because they want to not die wondering "what if". No one is ever safe from "mental demons" and it's terrible when someone takes their own life, no matter what the category root cause was. But I know very well that choosing to achieve nothing due to fear is a bigger open door for those issues.