There are two discussions here, the technical and the one concerned with freedom. I am concerned with both, and I think we need a compromise which doesn't throw out the latter in order to obtain a perfectly secure model.
My concern is not only with ad removal, that was just an example. My concern is digital autonomy in general, and the issue of giving an American company the power to decide what software users around the world are allowed to execute. They can censor software they don't like, and rogue governments can pressure them to censor software that THEY don't like. E.g. the EU who might want to prevent people from installing E2EE apps soon when Chat Control is rolled out.
There are good technical security arguments for phone based solutions over the alternatives, but it doesn't mean that the alternatives are worthless, just that the users have to be a bit more vigilant. I think that is a better compromise in the interest of protecting freedom and democracy.
We are some of the few people who can understand the long-term implications of the different technical solutions and the potential tools it will give private companies and governments to suppress people. If we are not advocating for freedom over convenience, then who will?