OP is bitching because the fights in shows like SU are not shonen quality. Hiring someone who gravitates towards character-driven stories to do an action scene gets you something like pic related, which still makes people bitch because it's not flashy enough. There's no actually winning with people who bitch about SU. The scenes could be fucking sakuga levels of competent everytime and we'd still have people going, "All this animation wasted on a shitty story!".
SU is just a crappy show. That doesn't mean hiring artists who are better at action or better at character acting is abnormal or stupid. TMNT and Castlevania has great action scenes, and if you look at the portfolio of those people, they all lean towards action-oriented work. This is not unusual.