If you assume Apple is collecting data, why would proxying the safe browsing make any difference? They control the OS and the browser, which has a LOT more data than just IP addresses.
And exactly what "logs" do you think every data center will be maintaining? If you think there is anyone logging the last 24 hours of every web access that passes through a major internet exchange, you have no idea of the scale of data that would be. Even China isn't going to be able to do that (for internal only data)