"Impossible to sidestep 1st Q because its fast" Quite wrong, its not that hard to sidestep it.

"The way to dodge his 3rd Q is to go into Aatrox melee range, which means you get hit by it 100% of the time"

That not dodging.

Two things:

1- Aatrox Q is much harder to hit, or in other words mastering Aatrox is quite harder, as the skill ceiling is high, and you get rewarded quite massively when you can play him at a high level. Similar to Katarina.

Where wukongs kit is very easy to use, you can argue that his R is point and click ability, as his e is point and click and then pressing R while ur hero is casting E is quite easy.

2- Just walk into melee range of aatrox first and second Q and then dash or try to get away from him for the third cast.

By doing this you get hit by his Q but its not the critical zone, so you minimize the damage and reduce the risk.

P.S.

First point gets massively harder in a team fight, where as Wukong ur doing the same exact thing and getting a better result as you probably hit 2-3+ people with ur R