Originally Posted by Ripplez
It's not a soft CC. It's the equivalent of a silence but for autoattacking. The biggest source of late game damage is the ad carry in most situations because of the way ad scaling works and alot of the lane structure in the game revolves around making sure the ad carry farms enough to get that scaling to work for her/him. But that falls apart when you are unable to use any of your gold and any of your scaling. I'm very confident people did not spend half the game farming an Infinity Edge or Bloodthirster just to turn into ad casters for 3 seconds. It's not minor.
You're also forgetting that the same logic that says if you get in 600- range of the enemy team will get you killed also applies to ad carries who tend to have autoattack ranges approximately the same or lower. They still survive. It isn't easy to do it as Teemo but it's certainly possible.
Blinds are strong. They are incredibly rare but they are ridiculously strong when tehy do work because they do the same thing Silences do but to the most important member of the team late game.
That's considering you're going to use Blind in the enemy ADC, that member that's always behind that wall of Bruisers, Tanks, APC, Jungle, Support, etc, if you manage to do it, and still survive (with almost no hp left), yep it's going to be useful to stop enemy's ADC damage for 2 auto-attacks and have to fight a 4v5 because Teemo's almost dead.
Sometime ago there was a poll about the worse CC, guess which one was chosen as the worse one? yes, it was Blind, and it's pretty obvious why, the CC itself may not be bad, but the champs who can use it (Teemo and Heimer) can't use it properly or is just useless for the champion.
Teemo is in a bad spot right now, i haven't seen even one
player who knows how to play saying "Teemo OP, his CC is too powerful, his damage is insane and his shrooms are not avoidable", instead they say "Teemo is really UP, he's not a safe pick, he's too easily shutdown/countered, has no late-game and his Team fight pressence is worse than Nidalee's".
I really don't get why so much people in Champion Feedback complain about him, he's probably one of the easiest champions to shut down, all you need to do is give your top-lane one kill, yes ONE kill and the lane is over, if you're having trouble, get a pink ward and destroy his "minefield" (which was nerfed horribly).
Edit: Found the poll: http://na.leagueoflegends.com/board/....php?t=1042983