I mean they are the best of the big tech companies, by a country mile, but that's not really saying a lot. If you want the full details, go read the privacy policy with a skeptic's perspective.
“Do your own research “
Everything in there seems fine to me, not sure what you’re talking about
Scanning for image hashes on everyone's phone is one.
They aren't doing that currently though, right? The only thing I remember is the NeuralHash thing which was delayed and then never came.