It is now trivial to check how many posts many people in social media make with their own accounts, and astroturfing campaigns still happen.

Why would social media companies fight against this? They, much like the public actually like the engagement. That is the whole problem.

Look at X, where you can now see where people are posting from, do people honestly engage with the feature? No, they don't bother to check if they agree with the content and they use it as an excuse to dismiss in bad faith if they don't like the content.

This is not a control problem, social media networks are not at a loss of options in how to engage with this, they don't want to, the point can be made that states might want to fix this and are unable to, but if that was actually the case there's half a dozen better ways to do that, among them, banning the services.

The idea that the entirety of the population ought to throw privacy away so people can still browse Instagram is repugnant to me.