If you have it installed on iPhone, thats fair, i have it, to promote lemmy, but please just turn “allow tracking” of in settings, so they cant make money from the data thet collect, also background refresh, because I’m pretty sure that also allows them to get a bit of data from you
I turned that off, as well as show online status, years ago.
You should disable tracking everywhere you can. Opt-out of personalized ads. Enable the do not track feature.