Forums are good in the way that they force everyone to mostly stay on a single topic of discussion. A bit like having one TV news channel that everyone is forced to watch and discuss. You can have tangents but it’s largely discouraged.
The Reddit Digg style doesn’t have this and is yet another example of the culture fracturing into a thousand little things rather than one single narrative everyone can talk about.
I get the benefits of the new Reddit model but I think it’s bad for social cohesion.
the biggest issue with reddit/digg/hackernews style comments is how top comments can be gamed for profit. old forums had the problem of "first" and "bump" comments, but steering the conversation was harder.
>Forums are good in the way that they force everyone to mostly stay on a single topic of discussion.
I have the complete opposite experience. Forum on-topicness depends on the moderators and users, not the format. I've been in plenty of forums and IRC/Discords where every thread and channel devolved into general chat. I find it less likely in the ephemeral comment threads of HN and Reddit.