I think that ship has largely sailed:
A computer detective on the police force suggested trying this with an iPhone:
My girlfriend and I started talking about sloths (a random topic that she has not texted or posted about) with her iPhone sitting nearby.
Sure enough, a day later she had lots of pictures of sloths popping up on her Facebook account. Aside from a sloth park in Costa Rica, there were no links to commercial products, just photos.
https://www.digitaltrends.com/mobile/is-your-smartphone-listening-to-your-conversations/