Sure, but once you've conceded that yes, CrossFit has an unusual increased risk of a disorder both deadly and detrimental to fitness, then you need to deal with objections that CFers would be better off with the next alternative
This is news to me and of relevance to my exercise choices. Is it the consensus of all the people on lesswrong who have the name 'gwern' that following CrossFit's workout of the day routine is on net detrimental and to be avoided in favour of something else?
From my experience (anecdotal observation) is that with Crossfit what the participant brings into it largely determines what they take out of it. Now perhaps not all Crossfit boxes(gyms) share the same culture. But where I go there is a focus on form and scaling of workouts. Also those that are serious about progressing know how to hold back because rhabdo would destroy their(my) work and gains. Those who have no real goal except some loose idea of improved fitness and health never seem to push themselves hard enough to do damage. I'd say rhabdo would take...
Here's an internal dialogue I just had.
Q: How do we test rationality skills?
A: We haven't come up with a comprehensive test yet.
Q: Maybe we can test some part of rationality?
A: Sure. For example, you could test resistance to akrasia by making two contestants do some simple chores every day. The one who fails first, loses.
Q: That seems like a pointless competition. If I'm feeling competitive, why would I ever skip the chores and lose?
A: Whoa, wait. If competitiveness can cure akrasia, that's pretty cool!
Now we just need to figure out how to make people more competitive in the areas they care about...