The problem with reading the rules is that most people prefer not to. Well not at first at least. Let me present you with two cases. Let’s say, you’ve never played an A&A game in your life, but you could choose between two situations:
a) I contact anyone at my local gaming store that has played A&A before and see if they are interested in teaching me on a turn-by-turn basis how to play. This way I can forgo the likely hours in which it would take me to learn the game from the rulebook and start playing immediately. During the game, my mentor teaches me how each move is done, how to attack, land with my planes, ect – pausing the game each time a question comes. If any higher-level questions arise later on (transport loading and unloading, IC questions, ect.), I can consult that player later on or look through my rulebook to try and find an answer now that I have a firm grasp on what everything is and how to play. If there are any disputes, I can just browse through the index of the rulebook to find a suitable answer. This is essentially playing by example.
b) I take the alternative path and read the rules from the beginning, like you stated. Once I have read and re-read the rules numerous times and tested them on the practice battlefield, I in a turn know how to theoretically play.
I may not know about anybody else, but I choose option A. For any high level game like Blitzkrieg! And MTG, sometimes reading the small print in the rulebook can be anything but auspicious. I believe it was Plato or Socrates who once said, “To play the fiddle is to play the fiddle.”