Wether you like it or not, we would have not won the Scudetto without him
This is a ridiculously repetitive argument.
Pick one, they're all at least as valid:
We would have not won the scudetto without Lautaro Martinez.
We would have not won the scudetto without Alexis Sanchez.
We would have not won the scudetto without Christian Eriksen.
We would have not won the scudetto without Achraf Hakimi.
We would have not won the scudetto without Ivan Perisic.
We would have not won the scudetto without Milan Skriniar.
We would have not won the scudetto without Stefan de Vrij.
We would have not won the scudetto without Samir Handanovic.
We would have not won the scudetto without Niccolo Barella.
We would have not won the scudetto without Marcelo Brozovic.
We would have not won the scudetto without Matteo Darmian.
We would have not won the scudetto without Alessandro Bastoni.
It's a naive argument. Without player X, we'd have replacement player Y and he'd probably contribute just as much, depending on what his cost was to the club and what the cost to replace him was.
And the irony here is that Lukaku is the easiest to replace of them all due to the sheer cost to bring him and have him here... Please stop using this sentence. It applies to almost everyone in the Scudetto squad.