Does Twitch need to be nerfed?
Let's be honest here. Twitch is probably the easiest and safest adc to play. There are some matchups where he might struggle a bit in lane phase, but then you remember that he has stealth and true damage which fixes many of the "weak lane phase" issues. And at 6 he becomes even safer due to aforementioned stealth and the ridiculous range he gets from his ult. So even if you're really bad at positioning (even though you have access to stealth), you still have that crazy range from your ult. And there's also the fact that he has better AOE than most adc's (and we all know that in LOL AOE damage is broken).