Easier in what way?
If you’re using Discord a lot already, then Discord will be easier for you. That doesn’t mean Discord is objectively superior for all purposes.
The New Topic button is available to everyone, and you can write about anything relevant.
I have no intend to spend any time on a Discord server, and even if I did, I wouldn’t check it more frequently than I check the forum.
This forum works well enough for live chat too. Most people just don’t want to be here 24/7, and a Discord channel would be no different.
Like:
and
We have announcement channels here too. We don’t need Discord for that.
If they work as well as Slack threads, then forum topics work vastly superior than threads. Because even though you can organize messages in threads, many people don’t and just dump their reply in the channel directly, and before you know it people are discussing dozens of topics/issues in the channel and it’s impossible to keep track of who is talking to who about what. Let alone find older messages again.
Sure, maybe you can have moderators enforce this, but a forum is designed around nicely isolated topics from the ground up.