Yes, I agree targeted ads work for
some things, like people who are wanting to find the thing the advert is for. But the claims being made here are very different - that ads can "capture" people politically even if they didn't set out to be converted and this was "pivotal". I'm very skeptical of this claim and the only studies I'm aware of refute it.
To be clear, I'm not arguing that voter databases are useless: they're useful to get your own base out to vote and not to waste time canvassing hard-core supporters of the opposing party. This isn't the sort of data people are hyperventilating about when they talk about Trump, Brexit or Cambridge Analytica, is it?
But even if data was useful in this way, why would that be bad? If data is used to most effectively focus effort on convincing people, they're still convinced by the arguments at the end of the day, and feel they made the correct decision. What's wrong with that?
Google has shown this with an experiment called the redirect method in which they used ads to target and deradicalized potential isis members.
I recall this claim. It's implausible on its face.
The problem is they have no idea if the people who saw the ads were actually potential ISIS members. This isn't a precisely defined term and they can't test that theory against reality - it's not like normal AdWords where you can measure against sales to figure out if the ad viewer was really interested in making the purchase. The assumption that they targeted "potential ISIS members" was based on using (some admittedly clever) keyword choices and then assuming the only people who search for those things are people who want to become a jihadi - a massive and untested leap of logic.
They say over 320,000 people clicked the ads in only 8 weeks. That's a staggering number of supposedly potential terrorists. In 2014, when ISIS was growing in strength, they had only about 14,000 fighters according to US intelligence. So they're claiming they "redirected" a population 20x the size of all of ISIS in only eight weeks. If there were really so many people trying to join ISIS at that time their army would have been vastly bigger.
Much more likely, the vast majority of people who clicked the ads had no intention of ever becoming a jihadi and their campaign achieved nothing.
The suicide ad is much more believable - it's well known that many people who attempt suicide don't really want to die, they just want help.