I dont necessarily miss 'forum culture' but honestly things often feel more...organized.
If there's convos going on that you dont care about you don't have to go out of your way to ignore it and it's very much better than having more than 20 active people at once.
Honestly joining big public discords sounds like absolute hell lol.
Forum markup is also sometimes kinda neat when it's not used to make your posts the worst thing ever.
Also communities feel a lot more welcome if it isn't some place you can look at without making your presence known the moment you take a look.