alt Hacker NewsIt's not much more likely. People don't realize but demographic targeting works really well. When you are a certain age, certain gender, living in a certain area, with a few other inferred characteristics, you're very likely to be talking about, thinking about, and buying a small set of product types
I think the OP knows best what happened to them, so I will leave it up to them to decide. But to get targeted for a product you just looked feels like pretty standard retargetting.
I don't disagree with your point that demographics can be very good and sometimes uncanny, that aspect I agree with. It is just the timing that leads me to believe it is retargetting.