I'm glad you enjoy Discord! And thanks for your hard work. But I disagree, and all of the issues with Discord I pointed out above still persist despite your love for the UX.
> Instead of bashing library authors that have already so much to think
I never bashed library authors.
> why don't you propose a discord replacement and pay for it
I engage in communities that use Zulip and Matrix. Zulip is free for open-source projects [1], and I donate to a small community that hosts its own Matrix server.
> while providing the same ease of use for the users and the same features from channels, threads, third party apps/plugins, video conferencing, etc?
We're kinda getting away from the point here. No one is suggesting that there is a FOSS alternative to Discord that has 100% feature parity.
Instead of bashing library authors that have already so much to think, why don't you propose a discord replacement and pay for it, while providing the same ease of use for the users and the same features from channels, threads, third party apps/plugins, video conferencing, etc?