Why are bodybuilders and powerlifters outcasted in the fitness community?

I am disapointed that the majority of fitness professionals and health professionals havd no respect for bodybuilders, powerlifters, strongman, olympic weightlifters and ect. It seems they are regarded ass brainless supplement and steroid abusers and i find it sad. That the people that push human limits in physique and strength are conisdered non educated in what they do and that anyone with a medical phd is regarded as more knowledgeable in training for that. It makes no sense in my opinion. That these book smart people get a degree and all of a sudden become body tramsforming experts.