I do miss forums. The big downside of Slack and Discord for me is that they are chat rooms. They are active and immediate. They can be harder to get into posting and reading because of that and it's easy for questions or discussions to be lost to chatter. I think forums and chat rooms occupy very different space.
One of the reasons I love dev.to is because it feels closer to what I loved about forums.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.