@BeAware @lonelyowl I wonder how much of it is active suppression of platform self-hate on other platforms.
In particular, I've seen other people talk about how mentioning Fedi on other platforms causes moderation systems to jump into action and prevent them from talking about it.
Thus, their posts get suppressed automatically if they mention/link to a competing platform.
This would leave just people complaining aimlessly, and nowadays that would be easy to suppress with sentiment analysis.