It's possible. Sadly (or perhaps luckily, as it improves the odds for the Fediverse?) Discord is not well suited for discussion.

It's simply too fast-paced, too focused on synchronous communication, too unstructured for any sort of well-thought reply. It leads to shallow content full of noise, not to a community that slowly accumulates content that remains valuable in the future. As quick as things are said there, they also get forgotten.

And for a few communities this might be fine, but for some, Hell breaks loose. I can't see for example the conlangs community surviving in Discord. Or r/ask [anything]. Or r/cooking. And people there don't even notice the problem - they know what they see, but not what they don't see.

In special, Discord has a nasty tendency to take things off context. Because the context is from 15 minutes ago, thus it might as well not exist.

Just for the sake of example: this discussion. It has been 5h since OP shared the link. If this was in Discord, odds are that it would've been forgotten already. But in a forum-styled platform you can still access it, see the comments and contribute with your own.