Ability to arrive at justified true belief is not directly measured by IQ testing.
Consistent with this is the fact that many high IQ individuals believe ideas like man-made global warming, and that the theory of evolution has been proven through scientific observation and replication.
Bingo.
I have an IQ of 150-160, but I rarely associate with so-called intellectuals. They think I am stupid because I am a conservative Christian, and because I accept neither global fill-in-the-blank nor macro-evolution as “settled” science.
By the bye, my background is the physical sciences and mathematics, and (as an admitted retaliatory tactic), I belong to Mensa, Intertel, and TOPS. (Mensa is the least exclusive of such organizations.)