Originally Posted by Warlocke

Being decisive and making the right choices. A person who does that would naturally rise to the position of a leader is most groups of strangers. Why did the NPCs all submit to letting the Bhaalspawn assume leadership in BG1? The same reason. Nobody in the party knew their heritage until towards the end of the game.

This is a very good point

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."