Im not going to argue with you as i know you know nothing about CS.
Its very simple, of when engaged in a gun fight and you will be in CS if you can win those fights you'll lose the game.
You need entries, otherwise CT's will easily just lock you out, you need to get a entry kill or you will get stuck no mans land and lose.
Again im not going to argue with a Silver, the fact is the reason team buy players who can frag well is because its needed to win games, try and win a game and have 0 kills, it wont, happen, try to win a game and only have 10 kills, it wont happen, you need to be winning your aim duels or you lose.
Also most of the time ninjas dont work, you get killed in the smoke, you just only remember the ones that do as you have confirmation bias.