I'm an advertiser who has managed hundreds of millions of dollars for small startups and big corporations, brands, as well as a few small political campaigns.
Even at the time of the Trump election, the kind of ad targeting that Cambridge Analytica says they were offering through the personality quizzes was absolute garbage. There is a reason why the official response from Boz doesn't even mention the personality quiz stuff, because it was essentially irrelevant to the Trump campaign's performance on paid advertising on Meta. And I would go further to say that, except for his success in fundraising, all of his Meta advertising probably didn't move that many votes.
Cambridge Analytica, the organization, of course, loves to claim that they're the dark evil viziers behind the Trump campaign and they've advertised themselves as such to dictators all over the world. But that's just like Edward Bernays writing "Propaganda" back in the day, it is a way to sell their services. Trump digital director Brad Parscale said the campaign did not even use Cambridge Analytica’s controversial psychographic targeting.
Not to mention, the only reason that Cambridge Analytica had that open graph information available is because communities like Hacker News begged again and again for Facebook to open the graph and not have a walled web. After that they cut off that graph access.