That's like saying you can write a novel really fast because you have a fast printer.
These quality renders take long to devise, to find the assets, to pose, to polish, etc.
I do agree though that a 6/7-month dev cycle is too long for a game like this one, where the story has barely started, and where the hardest part to code (e.g. the phone and stuff) should already have been made. I wish they would balance this a bit better, because 2 updates a year is only sustainable if you provide tons of new content in each of them.
Anyway, the game will always have fans for obvious reasons. I know I will be one of them