What makes ISTp/ISTP so good at tools? It can't be Te because ISTP doesn't use that, it can't be Se, it could be Ti or Se, but since when does one's Id function determine what they are the master of, especially since they're "unconscious" of it, so it must be the dichotomies. Gasp... or maybe "good with tools" it's coming from a stereotype based on MBTI.
Maybe it's true for some ISTPs and some ISTps, but certainly not all.