alt Hacker NewsWhy have a compromised phone at all? You're still exposing yourself to telemetry. And if you've ever said anything positive about a Hong Kong democracy activist, you still have to wonder what's going to happen to you if you travel to any country with a mature extradition relationship to China.
I also think it's easy to underestimate your footprint when it comes to ecosystems that involve money in any capacity. No Amazon, Steam, no card information on a Netflix app, no signing in to Google to read a NYT article.
I think either you care about these things categorically or you don't, and I don't think anybody is going to be in the middle space you seem to be envisioning, which is concerned enough about the risks to avoid all banking but still a casual enough attitude about a compromised phone that you're fine with it for uses you consider non-secure.
Amazon and Steam work fine over a browser, as does signing in to Google. Why are you using Netflix on a phone?
The major problem is banking, although some banks still work with Waydroid, and a few banks have full featured websites that work. But you do have to be more selective.