I think they do care which is why conspiracies about your phone listening to you to serve adverts keeps popping up, but they don't really have any control or understanding of the situation.
Seems like it's an advertised feature that I assume is opt-out, and has a clear user benefit, from a company with an above average reputation for handling user data. Funny.
When LG does it its illegal, secret, denied, and for use in selling actual data to others. When Apple does it, it's announced along with many promises of privacy and as a feature you buy.
Yes at the end of the day it's a microphone in your home, but each has a very different stated (or unstated, in LG's case) purpose.