Lemmy is free and open-source software for running self-hosted social news aggregation and discussion forums
Maybe Lemmy [1] with a Twitter UI is worth exploring?
I genuinely don't understand the point this article is trying to make. For one, who (beyond the law) has the right to demand that free software developers do (or don't do) whatever they demand?
Second, on a more practical level, both of the examples cited[1][2] keep their code bases on GitHub. If anyone disagrees with the direction of travel taken by the developers of those software packages, then surely they are entirely free to fork the repository and start developing it in the direction they want to take it.
[1] - Tusky: https://github.com/tuskyapp/Tusky
[2] - LemmyNet: https://github.com/LemmyNet/lemmy
https://github.com/LemmyNet/lemmy
I know of the dev instance and chapo.chat, but I'm sure there are a few others.
There's Lemmy https://github.com/LemmyNet/lemmy