Yes, that’s the culture here (for now) but that can change. For me, this is the only kind of social media worth wasting any time with. Because you’re right, if people are just ranting a certain perspective, without listening to others, or taking in any new information, they are largely having a conversation with themselves and, those they are attempting to influence will hang up the phone.
Most social media is either a lot of silliness or a lot of ranting and hanging up phones. Medium is trying to be different without trying to hard. We shall see where it ultimately ends up.