Ironically, a large number of privacy minded individuals are using Google Pixels flashed with custom roms (Calyx, Graphene, Lineage, etc)
If not designed specifically for privacy, these Android forks are at the very least not stock Android, and stripped of many anti-privacy features.
This can be accomplished due to the Pixel's (mostly) unique attribute - a bootloader that can be unlocked and relocked.
I don't know why Google have allowed their bootloaders this freedom, but I can't imagine that a company with a reputation for killing anything they touch would allow it to continue for much longer.
If/when the day comes that the Pixel is fully locked down, what options are there for privacy enthusiasts to continue using a smartphone, an inherently unprivate device?
Does anyone know of development going into looking at how to unlock bootloaders on any device, opening the door for custom rom flashing to continue?
Are the pinephones, fairphones, etc going to have to ramp up production?
Anything going on in the iphone department allowing for detachment from the Apple ecosystem?
What happens next, really?
Apple is a big tech company and no big tech company should be trusted (too much). While I think in terms of their user's privacy they are better than Google, Google at least is pretty vocal about them spying on their users with their actions.
On an iPhone you'll never get completely rid of trackers and stuff even with a jailbreaked device. Imo the best option you have (if you want a phone that respects your privacy) is an Android phone with a degoogled custom ROM that focuses on privacy. Something like Graphene OS, Calyx OS and /e/OS.
Last time In checked Apple privacy practices, their were collecting same kind of stuff than Google.
The major difference is that Apple acts as a proxy between the user and advertiser, where Google let other companies also track the user.
NONE of them can be deemed as privacy-friendly.