I think this might be a wisdom problem rather than intelligence. It sounds to me like something an immature paladin who spent his entire life in a temple reading about tieflings and never actually seen one would think and say

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."