Bah. Some of us are old. We remember when peopled played -the game- and didn't play -the leaderboard-.
Most of the online shooter community is either using a controller ... *cough* or is only interested in being the highest frag count.
Adding bots in allows a lot more people to enjoy a game while giving the option of having other players at the same time. I don't see a downside, unless the bots are hacked Reaperbots who always knew where you were at all times... (UT bots were the best, you could actually sneak up on them.)
I haven't played CS in years, but this looks like a nice upgrade.