You don't really, though. Because who knows which applications listed in the app store have the FB SDK embedded inside.
There's no practical way for me to inspect every app listing that I might consider installing, to see if it contains the FB SDK.
OTOH it's sort of hard to live on FOSS Android software alone.
That being said, I've been tempted to get a Motorola Razr flip phone just for the sake of nostalgia, though I would have to root it and remove everything related to Google to feel comfortable with it.
I trust that Apple isn’t profiting off my data. It isn’t even close to their business model so it allows them to give their users privacy G and F can’t.
To give you an example, I recently implemented an allowlist on my firewall so only approved devices can access my WAN. I immediately started seeing frequent dropped packets from my wireless access point (Netgear Nighthawk AX200) and switch (Ubiquiti UniFi 8-port PoE) to Netgear and AWS IPs respectively. While some of that is probably them checking for updates, the volume didn't really seem warranted.
Going back to Apple though... sure, that's the exact reason why I switched. They already charge a premium, so they have less of an incentive to pad their quarterly earnings selling data. But they're still a company, still responding to shareholders, and they already collect certain amount of analytics. There's not that much of a jump from there to selling it, so being careful and mistrusting is probably a good thing IMO.
I'm very familiar with how advertising currently works, but the field is also one that seems to evolve quickly (no doubt why: lots of money to be made).
Am I smarter than all the engineers and startups and existing firms whose revenues depend on tracking? Most likely not.
The other more mundane reason is just I'm lazy and tired. I just want a phone that works without wondering about patching the OS or whatever. Maybe you enjoy doing that, I don't.
We don't live in an ideal bubble where I have full control over the tools I use. Its the same argument people make for video game moderation "if you don't like it, turn off chat" but then you're self-isolating.
Point is, this is a social problem.
No need to pay someone to hold my hand in not clicking that button.
You can accomplish even more by not installing their crap apps to begin with, and have always had that choice. You need google to save you from yourself and this is a compelling enough reason for you to switch phones, even though you're smart and actually know all of what's been going on and how to prevent it, but choose not to?