Speaking from experience, crossfit is absolutely littered with injuries.
People are constantly unable to show up or do the WODs because of injuries.
In 6 years of training I would maybe have the occasional muscle pull. 2 weeks into crossfit training I developed a bad shoulder(from hand stand pushups i think), couple months later a screwed up lat and had constant shin splints came along for the ride.
Haven't done crossfit in 2 months. Body feels amazing again.
but really I'm just commenting because the name of that book is amazing.
Great book, his mobility stuff is gold. However nothing radically new from his mobility wod website, which was recently redone to be much more effective. I'm not a big fan of how he teaches the lifts, but there is a segment on spinal bracing while just standing and sitting that I found quite interesting.
I ordered it a few weeks back and plan on starting it in a couple of days. definitely some cool stuff. I showed it to a family member, who's been a Physical Therapist for over 30 years, and she was really interested. I go to CrossFit twice a week, lift one day, long run another...haven't been injured, but have the typical soreness that could use something beyond basic foam rolling.
A DPT is only 3 yrs of not too challenging schoolwork (you need to study of course, but it is something most people can accomplish). The other things you mentioned require at least 5 years and are far more selective and difficult.
It misleads people when you put Dr. on the cover of your book because people automatically think you are a medical doctor. Why not put Kelly Starrett, PT, DPT instead?