The main problem is that melee champs have nowhere to go.
Mid is out of the question and the repeated nerfs to the jungle make it difficult just to keep up in gold/XP, let alone gank. With people taking ranged champs top
early game becomes impossible, especially since mana regen nerfs have made it impossible to counter-harass with abilities. Ranged tops can reach more CS, harass without taking minion aggro, and overall make your early game hell. Top is supposed to be a farm lane, usually top is the core of the team and because he has the most farm he is usually the most powerful player during mid-game teamfights. Taking ranged champs top just turns it into another mid lane, and the melee top is pretty much SOL until he gets enough items to be able to burst down the ranged cancer he is up against, but considering the harass he endures throughout the laning phase that usually takes quite a while.
People complain about melee fighters abusing tank items to become one man teams, well the only way to stand a chance against ranged top as a melee is to build tank items, especially since you can't afford damage items because you have been bullied out of half your usual cs, the community cries about a problem that they created. I despise people who cry about
because it's literally the only thing keeping people from taking
top every single game.
Yes most melee fighters will eventually outscale most ranged tops, but by then you have already lost turret and you are far behind in CS. Yes dual ADC's are more of a late-game liability than anything else, but no one guaranteed you late game.