based on his performance 2 to 3 years ago? bro you're delusional asf
have you considered the fact that they might have tried putting yay on duelist when scrimming or practicing but it just doesn't work out? they are a fucking pro team ffs, they are getting paid to win games.
just accept the fact he's not as good as he was before instead of making pity excuses blaming the entire structure of bleed for his inability to adapt to meta changes
I used to watch yay make insane plays back in OpTic and sometimes even before in Andbox. You could tell that he felt extremely comfortable with his role and his teammates, he had built a chemistry with them that he probably won't have with any other team. Now he's entering a new region, with new teammates and with probably little chemistry built up until now and yes, he's doing terrible, but at least we can all recognize that there's still potential in him as a star player. Let's not forget that the C9 drama, DSG and everything else probably took a toll on his mental and put a lot of pressure on him to perform. He'll eventually grow back his confidence and build more chemistry with the team, enabling him to do as good as he used to be.
This is like a losing queue in dogshit ranked: there's good streaks and bad streaks, sometimes you'll do great, sometimes horrible, but it's all about holding on through these difficult times and becoming a better player over time.