> Android is such a massive code base, and was designed more for surveillance and consumption
I disagree. I have been using de-googled / de-spywared Android for a decade now and I really love it. Once you remove google mobile services and rely on open source applications Android feels really good.
Also its questionable if projects such as purism or even the pinephone will ever offer such good security and privacy as a de-googled Pixel with GrapheneOS will.