This may be a stupid question, but how does an app being on Play Store and not F-Droid make it no longer FOSS?

FOAAS (Fuck off as a service)

Man, when I played, poor Paul got burnt to a crisp. I’m still having flashbacks from that shock.

I feel like Windows 7 fills the sweet spot between the seemless UI of the 2000/XP era and newer versions. Windows 10/11 could top that list if Microsoft had bothered to create a proper UI instead of just slapping some material design on a handful of apps, while everything else is still basically 2000/XP. Then again, GTK2/3/4 can be almost as bad.