They make more money on digital only, you don't actually own the product, and you can't resell it.
The game-key cards can actually be borrowed or resold, it just doesn't have the game itself on it.
Yeah I was wondering too where the patch notes were. Thanks for linking!
Don't fall for the trap that they recommend an expensive Pi 5: I am running Pi-hole on a Pi 2 but you can basically run this on obsolete hardware, whether that's a Pi or a PC/laptop