Maybe Discourse would be a better discussion software compared to old school forums.
From their FAQ:
Discourse is a from-scratch reboot, an attempt to reimagine what a modern, sustainable, fully open-source Internet discussion platform should be today – both from a technology standpoint and a sociology standpoint.
We tried to build in all the lessons learned from the last ten years of Internet web forums, so that the community has a natural immune system to defend itself from trolls, bad actors, and spammers. There’s also a trust system, so engaged community members can assist in the governance of their community.
The act of participating in a discussion should fundamentally feel good in a way that it currently does not on all existing forums and mailing lists. It should be fun to have discussions with other human beings, not a chore, or something that’s barely tolerable.
Single sign-on with WordPress would be needed to make the user experience smooth.