I think its just one of those marmite things...
Nitro racers generally seem to dislike electric racing and vice versa, offroad racers seem to dislike onroad racing, big scales dislike small scales, and serious racers seem to dislike SCT's.
It took years and years for the micro racers to get rid of most of the "toy car" stereotype, but we carried on regardless enjoying ourselves and gradually proving that we were a strong class with a strong future