#2 was about getting banned from services if you talk about the wrong subjects. I think one example given was youtube banning people talking about crypto.
You need to sponsor those who tell it as it is.
To me that is starting to look like #2, not a clear cut but still. Its a mechanism of though suppression at least. You are literally risking you career over drunk tweet you made trying to be funny.
[0]"So You've Been Publicly Shamed" Book by Jon Ronson
The problem is that anonymous posting also have problems of lack of accountability. So we need to watch out for how to balance and use this power for good.