Just one example, but having to be logged in to view most content on there was a recent change that made it pretty hostile to the openness of the web platform.
You can find links to other criticisms of twitter in TFA:
Surely if you read the article you read the “But You're Still on Facebook and TikTok?” section and don’t need me to explain what it said - but i can summarize:
Twitter is un-aligned with their goals, and has dismal reach. Facebook and instagram are unaligned with their goals and are how they reach a lot of new people.
Not super complicated, tho if i am reading between the lines - calling out the numbers feels like a call to action for other orgs. Suggesting they run their own numbers, and get off twitter.
You can find links to other criticisms of twitter in TFA:
Interop: https://www.eff.org/deeplinks/2021/01/twitter-and-interopera...
Privacy: https://www.eff.org/deeplinks/2020/04/twitter-removes-privac...
https://www.eff.org/deeplinks/2017/08/twitter-and-others-dou...
https://www.eff.org/deeplinks/2019/10/twitter-uninentionally...
Accountability: https://www.eff.org/deeplinks/2015/08/twitter-axes-accountab...
DM encryption: https://www.eff.org/deeplinks/2020/07/after-weeks-hack-it-pa...