Earlier quoted context omitted.
Like I said: there is no quality control.
There is no quality control at regular, commercial gyms either. I used to work out at a popular commercial gym and would see trainers doing the most ridiculous things with their clients: swimmers press on a bosu ball for a average 45 year old non-athlete, all kinds of pointless machine circuits. Coming from a competitive sports background and year of training, my injury rate has actually gone down after joining cross…
Which brings us neatly to my second point, which was injuries/Kwh.
Most commercial gyms don't perform exercise selection; it's done by trainers who generally focus on stuff that seems difficult and exotic because that's what brings in the business. The gyms themselves select insurance-friendly machinery.
While Crossfit gets people up off their backsides to do actual work, there's a lot of flat out stupidity mixed in with the legit stuff.
High rep Oly movements? Dumb.
High rep box jumps? Dumb.
Kipping pullups? Let's not go into that here.
Mix in the fact that a bosu ball pushup, while stupid, is less likely to cause a bulged disc than say deadlifting 65% of your DL 1RM for max reps; and suddenly we again find the quality control thing swinging back into central view.