3 item Miss Fortune did over 1k damage with 1 "Q"
Meanwhile, I'm playing Brand. An "E+Q+W" does 880 damage before mitigation.
Miss Fortunes dusk blade passive did 220 damage. That leaves ~800 damage from a single "Q".
I have to land a skill shot and use 3 abilities. Miss Fortune uses a single targeted ability.
I had ~1600 total health. With 3 items, Miss Fortune damages over 50% of my health with a single, targeted, ranged ability. Possibly killing me from 100% health with just one more auto attack.
Miss Fortune had ~1400 total health. "E+Q+W+R" from Brand would have done 1630 damage before mitigation. It would require a perfect 3 ult bounce and landing 2 skill shots.
This is all without even considering "runes". (Miss Fortune didn't trigger press the attack or coup de gras.)
TLDR: Riot won't nerf ADC.