It also bothered Ryan that JD wanted the cast to be part of things that he was involved with but JD didn't show interest in things that the other cast members were interested in or involved with. Ryan felt that this adversely impacted JD being friends with Ryan and the others, at least during the first few weeks.
Hopefully despite this, JD was able at some point to help the already right minded Ryan learn a few things about not sustaining stereotypes and about what comments may have seemed okay are not in fact okay.
One mild case of saying something not right was when Ryan called JD's laugh "the gayest laugh." One shouldn't say things that encourage stereotypes. It should be noted that Chet Cannon went to the extreme, making a very sick comment that JD should "try to, I don't know, making it through life without being killed having that laugh." What kind of person thinks of such things?
Ryan himself did something very bad when he once mocked JDs mannerisms and way of speaking, by doing a repulsive swishy lisp impersonation. Ryan's routine was not acceptable. Period. End of story. However, giving Ryan the benefit of the doubt, this should be something that Ryan just needs to be educated about.