What? This is just targeted suggestion/propaganda. There is nothing here to degrade the target's self-worth or make them question their own perception.
No, gaslighting is systematically disorienting a person by staging confusing events, and blaming that confusion on the target themself. A one-way pipeline of targeted ads is not gaslighting, unless you call your wife crazy when she complains about all these weird ads she's seeing. But that's not what this service is automating.