ADCs who are still building Duskblade & Ghostblade instead of their usual Crit/Attack Speed items

Of course, for a Bronze 1 you get really good with AD Soraka. Reminder that anything works in Bronze/Silver games, so your point is pretty much invalid.

AP Ezreal, Kogmaw & Teemo(?) are considered a viable counterpart. An assassin with full tank builds who can still do as much damage as their squishy normal builds are not. Another good example is the Smite/Flash Runeglaive Ezreal, and it's thanks to that why the AP jungle item had to be reworked a couple of times.

So now is the ADC building Assassin item build path. The nerfs for Ghostblade has already started kicking in PBE right now. Let's see how far these spammers will go...