The game is not getting played by itself. There is a AI in the game but the game I refered to was the game being played by coh2-gamers. Just because there is an abusive strat that doesnt mean you have to do it. The game doesnt determine you to do it.
Depends on the people and the mood. Its not just coh2, its RTS in general, FPS, fighting games. Everywhere anytime people are going to use the "easy" weapons, use the easy combos, easy strats, etc.