In the sense that people shouldn't let themselves be convinced by arguments they don't fully understand, that seems somewhat related to DK, in that people shouldn't be believing they are more competent than they are.

(That's not to criticize OP - when someone makes an argument that sounds convincing, it can be pretty convincing! It's just different than actually being valid.)

They immediately reached a conclusion about something upon reading about it and now as they learned more, they understand that there might be more nuance to it