I mean, China's influence was enough for companies like Activision Blizzard to clamp down on people expressing support for Hong Kong, so it's entirely credible.

Turkey's president literally just ran an op-ed in the Wall Street Journal defending his invasion of Syria and telling tall tales of Turkey's humanitarian mission and unique effort to fix migration, violence and instability.

Twitter is swamped with "bots" (be they actual automated accounts, throwaways, state actors or regime-friendly humans) posting and re-posting fraudulent news stories, lies and plain old propaganda in favor of all kinds of national interests and political leanings.

I wouldn't be surprised if Twitter in an attempt at "corporate impartiality" would be more inclined to go after the Kurds or Hong Kong protesters than Turkish and Chinese slurs, dehumanisation and calls for violence. After all, there are probably more "people" reporting these accounts than reporting the various propaganda outlets.