No, Pete "K*ll-All-Muslims" Hegseth is not stoopid:
https://en.wikipedia.org/wiki/Pete_Hegseth
Pete "no-rules" Hegseth highly likely has malignant narcissism (psychopathy).
Psychopathic brain structure is bereft of empathy, &, hence, of remorse or conscience.
Power is all that matters to psychopaths. They live for the regular squirts of adrenalin that tell them they're still alive.
Not all psychopaths do harm, but Pete's a doozy.