edit: and before anyone asks, this nickname was only said verbally, in my house, among my family members, and never typed into a computer a single time
2. Common product has common name.
3. You call your child that same common name.
Therefore:
Ads for this common product shown to you must be because some unnamed entity was listening to you talk to your daughter.
Did I get that right?
I'm not sure I understood everything correctly, if you're sure, we'd certainly appreciate the names of any consumer products that you feel do this, as well as the consumer product.
Any tech product that keeps an audio livestream, then shares the entities with a powerful company later, just so they can show you ads, shouldn't go unnamed.
Try it for yourself. Choose a product. Maybe one of the examples here. Talk about it loud with your phone in proximity. Maybe turn off adblocker and see what happens.
(2) Android is open source and I'm familiar with the core codebase as part of my job
(3) Even if I get an ad after talking about a product, that isn't proof (hence my confirmation bias comment...)
[0] https://en.wikipedia.org/wiki/Cross-device_tracking#Applicat...