I was planning to wait and see what Boost has to offer before deciding if I should pay $20 to remove ads on Sync, but seeing this has convinced me to delete the app for good. Even Reddit isn’t half as bad as Sync when it comes to trackers and shady ads.
It doesn’t matter.
Those little login buttons make a call to their host (google/fb/etc), and that is what shows up in these shitty tracking apps, even if you don’t press them.
Using a Google fonts font? That’s a call to Google.
This is the norm on the Internet. You’d be hard pressed to find a site that doesn’t send some data to somewhere else for some service.