These types are vulnerable to hucksters and frauds. There is objective truth but an inquisitive, skeptical, and humble posture about the nature of things and getting to the truth is a much more ethical approach and a better way to lead and work with others. Also, your grandma's wisdom is often better than "science", especially social "science" because of mistaking correlation with causation, and from a general misuse of science for ideological purposes.
Remember "don't wear a mask" back in Feb? Many people practicing science don't even know what science is, in respect to the greater fields of knowledge and truth, and where science belongs in a hierarchy of values. Quick example: from a scientific perspective a beautiful painting is just dyes and a canvas, and music is just notes, but in truth it is much much more than that, it's beauty, transcendence, goodness, inspiration, initiates a culture, and tells a story and puts a human face on material things, among other things. Good remedies for the Dunning - Kruger Effect: 1) Humility 2) Wonder & Awe 3) Do No Harm 4) Ask a lot of questions (the Socratic Method).