Because it's an important "dead horse" to beat. Even with the URs/downgrades he has a higher BV than Ross and the other men who rely on clean triples (his BV with 3 UR quads was 97.49, though TES was only 98.47 due to -GOE as opposed to Ross's 82.91/96), so by BV and international scores Vincent deserved the team over Ross. Vincent's BV/TES at Nationals was 97.49 and 98.47 despite -GOE, 3 URs, and a downgrad; Ross's BV/TES at Nationals was 82.91/96.16 with NO URs/Downgrads and only one very slight -GOE. That means even with great GOE and no penalties in calling, Ross still couldn't overcome Vincent's TES. I think that says more about the value of quads than it does anything else...Come on - you're entering caseyedwards territory with this particular beaten and dead horse here. Surely you're better than that?
But, the reason it is more important is that it means Vincent probably won't be competitive at Worlds or the Olympics this year. While he can do quads, Nathan, Shoma, Yuzuru, and Javier can all do a number of quads without any URs or downgrades. Still more skaters can do slightly fewer quads per program but can beat Vincent on TES due to the quality of their quads and lack of UR/Downgrades along with superior PCS. That's the dead horse we should be beating - that Vincent needs to fix that UR/Downgrade problem to be competitive unless Yuzu and Javi retire - and even then he might struggle to get a medal in a stacked field.