I actually entirely agree with you. Nobody needs to take on accommodations they don't want to. And that was kind of my point; you should be aware that choosing Discord limits your participants and also limits your participants ability to engage with your project.
This isn't necessarily a bad thing; may even be a positive aspect. In a quickly changing project, maybe it's good if your documentation isn't too "sticky" and the solution to a problem isn't low-touch "read the docs" but high-touch "ask me so that I can experience the pain points"
