If I pick up my Motorola I'll see that I can't even have an adblock for the default browser. And yet very soon my iPhone will receive an update that adds generic extensions support into safari. There's an extension that automatically changes amp links to real pages for example.
Android is open as it gets and yet somehow the diversity of software there is lacking. Try finding decent email client that is not Gmail and doesn't suck your data into cloud. iPhone has got multiple and one is OOB.