Why ADCs often flame their support after losing lane

USUALLY, it is mostly the support fault for losing early game, and by usually i mean around 60%? of times, and the reasoning is simple. Marksmen scale really well with items, but thats why theyre not strong early game and also have to focus on farming. Supports on the other hand, don't scale well with items at all. But thats why in the early game they have a lot of power: they deal just as much damage as the ADC (unless they are ), they shield and/or cc, they ward, all while not having to focus on farming. But thats why ADCs are usually responsible for losing late game.

edit: nvm this community is r%%%%%ed