No one is talking about how Yuuri asked Victor to be his coach AFTER the season is over (reasonable). The season (for which Victor created Stay close to me) is still ongoing when Yuuri goes home, because he didn’t make it for Worlds.
Yuuri and Victor perform the routine at the same time (OMG was Victor thinking about Yuuri when he performed then?!). IMMEDIATELY after we have:
• thoughtful Victor at conference
• video going viral
• Victor dumping everything for Yuuri, which he did the moment he was able to.
The video must have only cemented his decision.