I agree with you. I like a lot of what Crossfit and other similar approaches offer, but I get pretty sick of the bickering. In particular, it seems like any criticism or difference in opinion is immediately personalized and responded to in a snarky or downright hostile way, without any real consideration of its merits. It's a shame when you think of how much that sort of approach holds things back.
Me? I'm glad to steal from whomever I can, and that's the reason why I like this website so much -- there's an unusual degree of pragmatism and a broad range of mindsets represented.
All that being said, I do believe that there are likely to be overuse problems and potential injuries from form imperfections if you stick too closely to the Crossfit approach for any extended period of time. I like using it for fairly brief periods (3-5 weeks) before going back to my regular program.
And in principle I like that GymJones is looking at how to modify the strict GPP Crossfit approach for use with specific sports. Interesting.