Like, I have a hard time even strawmanning such a position. Of course people armed with highly persuasive AIs will task those AIs into doing what is best for the people who own the AIs and the odds of that happening to line up with your own interests are fairly low. What the hell else are they going to do with them?
But then, keep gaming it out. This particular thing isn't exactly completely new. We've seen bumps in persuasiveness before. Go back and watch a commercial from the 1950s. It's hard to believe it would have done a darned thing, but at the time people had not yet had to develop defenses against it.
We had to develop defenses. We're going to have to develop more.
What I forsee as the endgame is not that we become mindless robots completely run by AIs... or, at least, not all of us... but that we enter into a world where we simply can't trust anything. Anywhere. At all. How does any being, human or otherwise, function in an infosphere where an exponentially large proportion of it is nothing but persuasion attempts, hand-crafted by the moral equivalent of a team of PhDs personally dedicated to controlling me? Obviously humanity has never had a golden age where you could truly just trust something you heard, and we can argue about the many and sundry collective failures to judge the veracity of various claims, but it's still going to be a qualitative change when our TV programs are designed by AIs to persuade us, and the web is basically custom assembling itself in front of us to persuade us, and all of our books are AI-generated to persuade us, and literally no stone is left unturned in the ever-escalating goal to use every available channel to change our behavior to someone else's benefit.
When does trying to become informed become an inevitable net negative because you're literally better off knowing nothing?
What happens when the bulk of society finally realizes we've hit that point?