The perfection fallacy?

I don't use GNU/Linux on my phone for "privacy". It's an added benefit, but not the point.

I use it because it's familiar, hackable and respectful to my attention. It works the way I want it to work and it's capable enough to fulfill all my needs. Switching to Android would be a downgrade on all these aspects. I'm aware that it would be an upgrade in some other aspects that I care about less.

You are right to remind that other service providers such as banks or any online shop do routinely collect and sell an amount of personal data that should also concern us, but a phone in your pocket that is used for virtually everything and that's controlled by a third party raises more concern than just privacy of consumer data.

Digital privacy is futile predicated on paying your electricity bill by credit card? Absolutist fatalism is not helpful.