I disagree with Wukong having an advantage in CQC.
The chains aren't super relevant. I'm fairly convinced Youmu is faster and she has a field around her that slows down incoming attacks while also being able to produce shockwaves to knock Wukong and/or the chains away.
Youmu can fire bullets even in CQC with the swipe of her sword, and her phantom half can also do the same. I reckon dodging bullets in your face is a lot harder than dodging them from a distance.
Even without the danmaku, Youmu would be at a constant advantage because Wukongs attacks would be slowed down. And, again, for every attack Youmu lands, Wukong would be getting weaker and, I think, fatigued while Youmu continues to grow in power.