You have to be on Android to use addons with mobile Firefox. Since Android=Google, doesn't that mean you are giving Google all your data including browsing data and the fact that you are blocking ads?
Yes, but at least I don't have to see as many ads, and my phone's CPU doesn't spend as much time rendering ads, and my limited mobile bandwidth isn't all sucked up by ads.
there's never been any evidence that Google is capturing all internet traffic on android devices.
that being said...
The other option is even less anti-consumer than privacy hating Google.
There's no Apple phone with an sdcard slot. No Apple phone with a headphone jack. Repair your iPhone ? Well Apple just slows down your device under the guise of prolonging its life.
No Apple phone where you can install apps through a non-Apple owned store.
Not a single iPhone has a built in FM tuner.
And for all the privacy flag waving from Apple over the years, they're now scanning local files for child porn. This is a feature set that will just grow.
Only if you are running Google Play services. You can certainly opt out of this if you like. I run LineageOS and do just that, but I also don't need my phone for much more than the basics, and F-Droid can fill those in for my use case.