Yeah, I personally wouldn't crossfit. It's complicated doing reps for time, exacerbating form with fatigue, etc.

Also, they program stuff like high rep clean and jerks and snatches along with high intensity cardio and gymnastic movements. Never a great idea to train high power, highly technical movements with fatiguing exercises and time pressure, let alone with poor form. I did a few classes in SF coming from a background in Olympic lifting and strength sports and I really found maintaining form and safety was quite hard.

I also just found out that I have hypermobility syndrome and both running and crossfit are the worst things I could be doing because of the resultant joint instability.