I don't think the debate is whether this data can improve your experience. The debate is in how the data is leveraged.
Watching the WWDC 2020 keynote, lost count of how many times the presenters referred to "on device" computation to create the same improved experience you're describing, but without sacrificing privacy.
When Google does it, we know the data is being leveraged not only for the betterment of our experience, but also for the betterment of their advertising products.