I have a hard time believing that any invasions of privacy Apple might be up to are anywhere near as severe as what Google does regularly. They specifically do as much as possible on device — for instance, all AI-based stuff in Photos is done with NNs on your phone itself while it’s charging rather than off in some data center somewhere and they limit data capture to the point that they cripple themselves in some ways (why do you think Siri is so lacking?)

They’re a company like any other and thus not some pristine angel, but I based on what’s visible as an end user and developer I would be shocked if Apple’s data hoovering is anywhere near as egregious as that of Google.