I never got why Twisted Fate ADC never became a thing...
It seems to be perfectly viable, I've done it several times and had no problem, but for some reason I get more hate when I go twisted fate ADC than when I go Soraka ADC or Sona mid. I guess nobody has done it on a professional level, so until then it's just a "troll pick," but why is it hated so much?
He is very poorly optimized for an AP character, dude isn't worth a damn without a lich bane and even then he only hits once after a spell. His W scales 100% off AD but only 50% off AP, and his only real AP attack is a single skill shot. And having spells scaling off AP yet still being an ADC is nothing new, look at Corki, Ezreal, Tristana, Miss Fortune, or kog'Maw. Speaking of his spells, he has a rather low mana pool compared to how much his spells cost. It's supposedly off-set by his blue card. But that has a cooldown and only restores a small fraction more than the cost to actually use the spell.(at level 5 it costs 100 mana to use the spell and restores 150 mana)
I've heard that his AA's range is too short, but his range is nothing less than average, he fits nicely into the same range as most ADCs. Personally, I think that people believe that an ADC with a targeted 2 second stun is just unfair on everyone else. So, people pretend he's a mage.
I guess I'll just have to wait until Korea beats the shit out of everyone else with a Twisted Fate ADC before people stop rage quitting every time I pick Twisted Fate as my ADC out of a crippling fear of success.