I'm a little late to this discussion regarding Tate but I really feel inclined to share my perspective. I don't really know about the technical ins-and-outs of animation, so I can really only comment or character art and individual drawings. I think I should take a moment to expound on what Ajay mentioned earlier, because it seems like some people have difficulty distinguishing the difference between a deficit in skill and deliberate style.
There is a fundamental difference between:
1. Someone who doesn't know what they are doing (Such as Kitano, who reliably fucks up basic construction and anatomy, and seemingly misunderstands the character sheets)
2. Someone who knows what they are doing, and they are making artistic choices that a consumer of their work may or may not agree with (Such as Tate and Yamamuro).
The reason why Tate is able to push his poses and gestures (frequently approaching abstraction) with frenetic confidence is because he has a solid foundation of knowledge that allows him to draw instinctually very well, which is obviously a crucial skill for an animator to have. He has a comprehensive understanding of anatomy and the character designs. I completely sympathize with people who do not find his work in their taste, but to suggest that he's got a level of skill comparable to that of Kitano is utterly ludicrous.
In terms of my own personal taste, I find Tate to be exciting because he skillfully excavates interesting shapes and forms out of the incredibly rigid art direction on the show. His poses and character designs exude confidence. I think his approach is an artful breath of fresh air in a relatively sterile and pedestrian kids anime. I find Yamamuro's work to be inoffensive, but I do find his current output to be mediocre when placed in the context of his oeuvre.
Furthermore, I personally find the idea that Tate's style doesn't fit in Dragon Ball to be completely laughable. Between the four series and the movies, it's evident that there are a plethora of ways to derive from Toriyama's original style in the manga, which had also morphed radically throughout the course of it's run. What is the "right" look for Dragon Ball?
Is it this? This? How about this?. In the 90's Yamamuro arguably developed the modern "classical" Dragon Ball style, with a fairly
strong departure from Toriyama's manga style, and wasn't at all shy about including his own stylistic voice. I would also argue that Nakatsuru's direction of GT to be a generally pleasing and well-received drawing style, but it's also pretty different from the manga style, and even from what's commonly regarded as the "classical" Dragon Ball drawing style.
Different supervisors have (intentionally or unintentionally) imposed their own subtle interpretations of the manga into the anime, and their protégés have implemented their own style derivative of the supervisor that came before them. At this point, it will never ever, perfectly replicate Toriyama's work, it can only be derivative of it, and by a few degrees of separate interpretations. Speaking personally, I am not interested in someone painstakingly recreating Toriyama's drawing style because that comes with it's own set of pitfalls (as seen in Toyotaro's work).