Contact football even if restricted to people 150lb and below is STILL dangerous. It’s not the weight disparity which is partly how I read that. It’s that the force that even 120lb people generate is enough to cause concussions amongst people the same weight.

After college a bunch of lightweight kids from high school would get together and play football. Two straight meetings ending in concussions ended that. We were virtually all less than 150lb.

The 150lb thing was pretty clearly because he thought his weight would be a disadvantage. Like saying he wouldn't play basketball because he was 5'4" and had a bad knee, the weight and the danger weren't related to each other, they were different factors in the final decision not to play.

If that is the case, that just shows that the author is on very tall stack of misconceptions. No one plays full contact football recreationally. It’s completely too dangerous. People mostly play flag football. Also most sports have leagues grouped by size or ability. The author dismissed the sport out of hand with wrong information.

I think you are missing their point

Adults usually don't strap on gear and tackle each other at your local park. When I played, we most ran routes, which is passing plays, if we weren't playing a pick up game. When I read this part of OP, I guessed he or she didn't do too much research on recreational sports.

Flag football is non contact. Just like ultimate that the author was considering.

Haha. Yes, but there is football... and then there’s futbol (ie soccer).