I don't disagree that platforms develop immune systems against various statements.
I just wonder what truths you have been attempting to divulge that are being censored.
I imagine that it's very difficult for a North Korean to discuss things openly on the Internet, and that people in less restrictive authoritarian societies need to be cautious in how they do it to avoid suspicion. Still, Americans like me do learn things about Russia and China that they would rather us not find out and discuss.
I'm not sure you can downvote a tweet, and ratioing a tweet usually increases its reach. The weird thing about Twitter is that for things to disappear they had to actively delete, or the tweeter deletes to avoid embarrassment.
Masterfully done! Attribute things to a poster that he hasn't said, compare censorship to an immune system and then go on to drag Russia and China into the equation.
It is very hard for an individual to get out the truth against large groups and a preconditioned public opinion.