It's only part exaggeration. I don't have to watch more videos on orbital rendezvous maneuvers since I can already do that, but I absolutely consider the videos on orbital mechanics and so on I have watched a part of the game. Even in the base game you are simply not going to ever dock two ships together without gathering some outside knowledge, and while you can just mash random parts together if you want to go to Minmus, if you're looking to go to Eve and back there will likely be a lot of planning involved.