Ignorant and dumb
The courage to say something ignorant and dumb has benefits.
I see it as baiting a hook, throwing it in the waters, and seeing who bites.
Some people that studiously wish to remain unmoved cannot resist the urge to interject saying "actually, that's wrong.
It is a way to get to how people think and how they frame. It is a way to invite people to bring their opinions into the conversation.