To me it seems more like shoving metagames aspects right in the player's faces. The way the game world works shouldn't change because it's a 12th level ranger that is fighting the hill giant instead of a commoner fighting the hill giant. Sure, the 12th level ranger can do a lot more damage than the commoner, but not enough to be treating the hill giant as a minion. The minion rules seem to work okay for mook humanoid opponents, but when you have minion giants, and high level minion demons, devils, etc. it starts getting silly.