What part of a Pixel is subsidized by advertisers? Are you one of those people that ridiculously believe flagship and midrange Android phones are plastered with ads? Have you even used an Android phone recently?
I never get YouTube ads (plus I have SponsorBlock among other features), I get no ads or paywalls on my browser (which support Ublock Origin and BypassPaywallsClean), none of my social media apps have ads and most are open source clients, etc.
I haven't seen a single ad on my phone in ages, and that's why I can't part with Android (for now).