The good news is that the required level of prediction to understand cause and effect of manipulation is much higher than currently achievable.
The bad news:
1: That doesn't keep them from trying and causing unexpected consequences.
2: States are getting more and more of that data, and they've got tried and tested methods to manipulate people ... physically if needed.
3: By surveying users in this way, is Silicon Valley legitimises surveillance states and undermines democracy.
One of the first Mastodon instances, there is no specific topic we're into, just enjoy your time!