A Discord is not a substitute for a website. Or a support forum. Or an issue queue.
Or really pretty much anything besides maybe IRC or Matrix if you're not worried about the openness of the chat platform.
@geerlingguy I think it's worth pointing out that Matrix can be displayed in plain text without any gates or walls. There are numerous non-chat applications for Matrix.
So yes, it can actually work as a substitute of a website backend, forum, or issue queue.
Some examples:
https://circu.li/circles.html
https://cactus.chat/
https://github.com/matrix-org/matrix-viewer
https://acter.global/
And more