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.
I think I meant, discord will be the best way to redirect users to other platforms. Reddit is obviously silencing talk of alternatives and people here might also link “reddit” discords here to keep some continuity