The social aspect is why I often continue engaging even when the other person is clearly acting in bad-faith, by maintaining a level-head I get boosted outreach to onlookers. Realistically, most people aren't going to change their minds over a Lemmy conversation, and if they are willing to be this usually shows in the first or second comment, but often engaging can show others and help outreach.

Debatebroism is bad and poor outreach, though, the focus should be on unity and not on dominating, hence the importance of humility.