Earlier quoted context omitted.
don't track/collect data Only two of your examples (parental controls and location sharing) require any kind of network, and those could be done with a private VPN running at home. The design of cloud-based services is purely for convenience and collection. Sometimes if the collection can be controlled, the convenience is worth it, but every beneficial algorithm could be run locally.
The funny thing is that the rise of cloud computing coincides with the rise of really powerful cheap personal computation, you'd think it would be the opposite.
Smartphones are a massive leap forward in low-power/energy-efficiency, but my 2013 desktop machine (KGPE-D16) still creams every smartphone ever manufactured on any metric other than power consumption.
I'm kinda tired of hearing nontechnical people congratulate themselves on having a "supercomputer" in their pocket.