Exactly
I got started with game programming about 12 years ago
At the time the "know how" was mainly graphics related
I have 8-10 game programming books on my shelves
I can throw them away , nowadays
Modern game engines do the job for you
The only item left to the game devloper is what you call artificial intelligence and I prefer to call game play

Some A.I. techniques can be standardized ( A* , fsm ) but it ìs a matter of fact that it is hard, if not immpossible, to supply general purpose solutions same as in the graphic side