In my opinion Anders Route complicated more than the other characters, You can't predict what will happen next in his route....
You are correct. To get the best outcome for Anders' route, a one-time event will occur, so it is advised to save the game after each choice.
Andy literally warned us about saving the game in Gil's day 8, because from now on, the routes are going to be as complex as before.
I'm agree with you, I'm do that every single choice because I want to know everything behind all of this novel series but when I'm do that I feel like the more I know the less I understand.