Misintelligent

The application of intellectual capacity toward inaccurate, maladaptive, or self-reinforcing conclusions; a failure of cognition not through absence of skill, but through misalignment with reality. Often amplified by speed, confidence, and rhetorical fluency.

"He's not stupid—he’s just highly misintelligent. Like, everything he says sounds clever until you realise he’s completely misreading the system he’s describing."