the better question is....does he regret starting it?....or adding tanks even?
I have no doubt that he never imagined what would become of it....he created the game for the combat aspect..... clearly.....
getting as close to reality that is possible on a PC.....to that intense dogfight that happened sometimes....on rare occasions....between two opposing enemies....he didn't create the game to recreate WW2.....
I would put money down....that if Hitech were to be perfectly honest he would say he should have kept it strictly AIR combat only....
I could be wrong, but I doubt it.
if he doesn't regret it....I task him with taking on some shade name and flying on all sides for a day or 2.....