You really have to start giving Conte credit for what he did here.
Look at Milan and Inter right now, how they're doing. If Serie-A is so bad, why can't they at least rise to 2nd or 3rd in the league?
Conte was amazing here, and that's a fact and part of history. You believe that we would've risen to the top regardless of him, but such a statement will always remain counterfactual.
Don't forget that in 2011/12, Conte brought together a bunch of new signings, mixed them together with the old guard and was able to topple a Milan side who had Allegri as a coach, Ibrahimovic for a striker, and Thiago Silva in defence; the reigning champions. We also went through that entire season undefeated. But according to you, this would've happened just based on all the new signings (and the state of Serie-A) alone. Anyone could've done it. Conte played just a minimal part in this.
Sure.
As for the part you said about Juve not being about one guy and that we had a great history before he became coach: Yes, I absolutely agree with that. But who has claimed otherwise?
Lastly, I would like to add: Yes, I too was annoyed at the way in which he left the club. It left somewhat of a bitter taste. But to deny his importance as a coach at this club is just silly.