memes

They still very much do sell it though, even if it's "anonymized" as per their privacy policy. My sister has one of those fuckin watches, and for a week every single month, anyone connected to her WiFi gets bombarded with "feminine product" ads. This didn't happen until after she bought the stupid watch.
While Apple claims to protect user privacy and not share personal data with third parties for their own marketing purposes, their policies also state that non-personal, de-identified information may be used for any purpose.
Infact, the FTC has issued strong warnings about it and seem very pissed off about such practice. The Federal Trade Commission (FTC) has warned that anonymization is no shield for ad data collection, and that companies making such claims can be held accountable for deceptive practices. Unfortunately for us, that just means that Apple would likely face fines and penalties if found to be in violation of privacy regulations, meaning Apple doesn't give a shit as they and other massive corpos often do.
Ultimately, users are warned to be cautious about the privacy claims made by tech companies like Apple, even those known for prioritizing privacy. I personally wouldn't even trust xiaomi, at least not without going over their privacy policies first and this goes for any companies selling such devices.