For me personally in the context of people I know who are interested in Crossfit or practice it
here.
1) People have the wrong ideas about what it actually does for them. There are actually a lot of fool out there who think it'll make them big and strong.
2) Many places (at least here) don't emphasise technique with the barbell at all. They just throw people in there and have them doing powercleans etc. with no real instruction. Yes, they're using low weights, but they're doing high reps and while they're tired as shit. It's a recipe for disaster (especially for the back) and as if the universe was out to confirm my fears, my neighbor herniated a disc big-time after a few months of crossfit.
I'm sure it's a great endurance workout if you have the technical part down, but throwing people in there without preparation is crazy. There's a reason guys are reading books and posting form checks on forums like this. It's because technique matters and takes time to master.
Odd, I've always seen very little support for it here.
Also, ANY organization or sport that treat a life-threatening condition like this is problematic: