I should have mentioned this earlier, but I did not downvote you so this is somewhat conjectured. In my opinion it’s not a question of who but of topic—specifically, and this holds in a more general sense, you might want to be cautious when correcting people about beliefs that are part of their self-image. Couch it in terms like “I don’t think”, “I believe”, “in my opinion”, “personally speaking”. That’ll make it sound less like you think you know their minds better than they do.
I should have mentioned this earlier, but I did not downvote you so this is somewhat conjectured. In my opinion it’s not a question of who but of topic—specifically, and this holds in a more general sense, you might want to be cautious when correcting people about beliefs that are part of their self-image. Couch it in terms like “I don’t think”, “I believe”, “in my opinion”, “personally speaking”. That’ll make it sound less like you think you know their minds better than they do.