F-Droid 2.0 - The Biggest Update In Years (youtube.com)
Because Google's phones are going to start being locked down for sideloading/alternative app stores to Play Store. In about 150 days, Google Android will require you to go to dev mode on your Pixel (if your Pixel is even unlocked), then go through a bunch of warning screens and turn on ability to install from other sources, then wait 24 hours before you can actually install any apps (which is the main thing cause if you buy a new phone you will have to wait 24 hours before you can install any apps this way, or you can immediately install using Google's ecosystem). Then load apps with adb, needing a second device, a terminal, a cable, etc.
Google Play Store is the source of much ‘Google approved’ app malware installs. The warnings aren't bad, cause 95% of phone users are irresponsible, but the 24 hours period stops even those who know something about app responsibliity from using their device their way.