from the article:

In short, using Discord for your free software/open source (FOSS) software project is a very bad idea. Free software matters — that’s why you’re writing it, after all. Using Discord partitions your community on either side of a walled garden, with one side that’s willing to use the proprietary Discord client, and one side that isn’t. It sets up users who are passionate about free software — i.e. your most passionate contributors or potential contributors — as second-class citizens.

Interesting to do a “s/Discord/Github/” replace on the above. Same situation yet hardly anyone gives a shit.

So yes, Drew DeVault is right. But he overestimates people’s commitment to free world digital rights principles and consistency thereof.