I don't mind discussing stuff with people who have different views from me, but on Reddit I would mostly type out a comment, imagine what kind of rude retort I'd get, and trash the draft. I remember some years back having a great back and forth with someone on nuclear power and actually changing my mind! But more recently it's just "you're wrong and dumb", no discussion. Ugh.
I'm still very new here, but it feels like Reddit used to, and I like it.