First, f-droid only accepts OSS apps, so the incentives for spyware is simply not there. Second, anti-features are explicitly marked on f-droid. Third, f-droid apps are curated like a very rigorous linux repo.
Being an OSS app is not sufficient protection. Most OSS apps aren't terribly misbehaved, but some are. Being OSS in and of itself is not anything like a guarantee with this sort of thing.
> Third, f-droid apps are curated like a very rigorous linux repo.
Yes, I know. My question is is this one of the things they're screening for?