The open mindedness that brought Bitcoiners to Bitcoin is, very often, NOT consistently applied to all areas of inquiry.

Many Bitcoiners are charlatans masquerading as paragons of open mindedness, conveniently paying little to no attention to the gains associated with being open minded with respect to Bitcoin.

This particular subgroup of Bitcoiners are "keep up with the Joneses" types who saw other people getting wealthy faster than they were. They're not open minded. They're profit minded which isn't necessarily bad, but when open mindedness and profit mindedness come into conflict, opportunity cost exists on both sides, and ignoring the unknown is a good way to get blindsided so it's typically wisest to pay the cost of learning and remain open minded.