There’s a lot of diversity of opinion between leftists and liberals. Generally speaking, conservatives don’t contribute anything and drag down the quality of debate because they are openly anti-intellectual, and their presence also drives away people who are actually worth having. The only thing that would happen if there were more conservatives on here would be more cable news tier screaming matches and more verbal attacks on minorities. Liberals still only want to talk and think at a cable news level, but at least they aren’t openly hateful and anti-intellectual.

People are more likely to change their minds or have productive conversations when they approach a topic from the same basic values and beliefs about the world, like if two people agree on the goal of uplifting the global proletariat, they can discuss how best to go about it, but if one person’s goal is to uplift the global proletariat and the other’s is, idk, to drop minorities out of helicopters, then both are just going to be screaming at each other. Not only that, but if two people are discussing how to uplift the poor while the other guy’s in the room, it’s going to have a negative effect on their ability to do so, because they’ll constantly have to worry about everything they say getting attacked by dumb, right-wing arguments. Imagine two doctors trying to discuss the nuances of their profession in the same room as an antivax nutjob.