In a similar vein, why talk shit about a player based off a handful of performances? S2k comes in, literally plays a LAN within a couple of weeks, in which he understandably does bad in, and everyone loses their mind.
Players that can hit the ground running are really rare in any sport. Even then, S2k does fall into that category - he literally went from bottom fragging to part IGLing and top fragging in the space of 6 months.
Look at some of the players doing well now, some of these players weren't even all that great in the beginning of CSGO, and it took them more than a year to start doing well, much less consistently top fragging or playing their specific role really well.
What makes it all worse is the mindless hives of HLTV and Reddit, which only care how a player has been doing the past 2 weeks.