I understand your concerns and effectivly if put it that way I’m advocating just that. I concur that this will put me in a bad spot.

Open communication is a very powerful tool especially in politics and academia. The thing is propaganda is also a powerful tool in politics. Propaganda and populism. With social media both of them became ubiquitous much to the detriment of the western democracies. The corona pandemic and all things about vaccination are a prime example of this trend.
While I still would very much like to have the ability to chat with someone from Australia or see pictures of people in Bali or share recipies with people of Norway, I see the downsides and am very worried of the trend that is emerging. The political discourse is rife with populism and the divided masses go into the fox holes for every matter be it as small as an atom and without any merit to argue about.
I have the feeling that compassion, understanding, and sympathy is going downhill and social media is giving a minority a voice to sound like a majority. I have the feeling that social media is exasperating all the negative emotions of the people. And to be honest that scares me.

So unless social media is heavily moderated - to battle e.g. hate speech and propaganda - I think a shutdown of every social media is needed.

But I have a question for you: Do you think of phpbb forums and blogs as open communication? If that’s the case, I’d say that I’m ambivalent of this issue since I wouldn’t mind blogs and forums since they are (typically) moderated.

P.S.: Reading all this again I see that it could be positive to give a minority a voice - like people with rare diseases so they could get better help, like repressed people and so on and so forth. But I still believe that sadly the cons outweigh the pros.