crossfit is a scam. People go to crossfit to become more fit. Since they are presumably novices, how exactly are they supposed to evaluate the instruction they receive? Crossfit, as implicitly admitted in your post, is perfectly willing to allow poor and dangerous instruction to be sold with their name, as long as the cash keeps on coming.

and this:

   If you go to a gym (CrossFit or not) that programs things that expose you to 
   to any kind of injury, then you should absolutely leave.

when you later call those people dumb is really amazing. Yes, they are dumb for trusting people like you who sell dangerous coaching with the crossfit brand. You're willing to associate with crossfit and turn a blind eye to how other crossfit coaches hurt people who trust them.