With the staggeringly low player base that is playing the worst COD in history (around 250,000 on at PEAK), with that amount of playlists the players would be so split that it would take forever to find a game in certain modes. There simply is ZERO room for that many playlists as most of them had between 500-1000 players at any given time.
Opinions are like a-holes. Everyone has one and all of them stink.
You don't like HC? Don't play it. Not wasting 11 minutes of my life for a YouTube Hero.