As someone who has promoted debubble in other HN comments [1], I thought I'd share my own discussion platform I'm building too:
Taaalk (https://taaalk.co/) is less focused around debate, and more around exploring topics:
E.g. OCD: https://taaalk.co/t/exploring-obsessive-compulsive-disorder Eating disorders: https://taaalk.co/t/discussing-eating-disorders Bitcoin: https://taaalk.co/t/bitcoin-maxima-other-crypto-things Flag design: https://taaalk.co/t/the-power-and-significance-of-flags Chess: https://taaalk.co/t/how-to-think-about-chess Psychedelics & Mental Health: https://taaalk.co/t/falling-inward-discussing-the-role-of-ps...