I would be fine with actual personalized ads. Hell, I'd give them even more data if they needed it to accomplish such a feat. But the best they can do is try sell me washing machines after I've already purchased one, or show me youtube snippets of scenes from Netflix shows I've watched recently (yes this one really did happen. No idea how, still checking).

I just don’t like the idea of having my own devices conspire against me to compromise my own privacy.

> It always surprises me when people say that they're fine with personalised ads

I think there's a bit of a language barrier. What advertisers mean when they say "personalized" or "relevant" is not the same as what their audience means when they use the same words. I find advertisers often mean "what you looked at but didn't buy," but I think most consumers mean "what is likely to interest me."

"I'm fine with being manipulated with supernormal stimulus." aka being profiled and then targeted with ads.