Overdrive solution?

I've been a Mopar fan since the 50's owed a few still have two 71 Dusters, had a couple of Fords & Chevys. Thing that gets me is how one guy puts down another guys car or car parts. Seems if the parts came out of the Mopar factory plant thens it's considered Genuine Mopar Parts. This is where if gets funny. Do the research not all auto manufacture make their own parts, Diehard Mopar guys will buy Kesiler auto ID trannys which is basically a GM 700R but would rather cut off a Left Nut than use a Wicap adapter to install a 700R and save some buck$ using adapters and a GM trans
Makes me wonder who's right