Hmm, this sounds exactly like what people said when they said that Vincent must be sent to 2017 Worlds or else all was lost for him and the US men, that sending Jason would be losing the third spot, that sending Jason would be costing Vincent his future...
And similarly, Vincent had also been just a Junior that year. He'd been to one CS event, which he mucked up. We were told to ignore it (because he was injured). And then he produced a good skate at Nationals with lots of quads (all of which were much sketchier than Ilia's). Vincent is ready! People like you cried. He needs to be established!
USFS correctly sent Jason, who did precisely the job asked of him and helped Nathan retain the three spots for the Olympics. Vincent made his Senior debut on the GP the next season, where he had a middling debut at best and hardly lit the world on fire, and then was sent to the Olympics and Worlds anyway. So it was hardly what you would call a huge setback, or cutting off the nose to spite the face...and guess what? When Vincent was sent to his first Senior Worlds? He screwed it up.