I know you want to force the Warrior of Liberation parallel but Sanji himself rejected this path
Just read
You didn’t understand your fav character
He rejected the idea of turning into a cruel, cold and emotionless warrior of science, you're only focusing in the word "science" here, that is already on his body since birth and he cannot change that fact
At that point he was already even ready to die to begin with, this changes nothing about the nature of his enhancements, about how it's gonna work on him and his future from now on
He had asked Zoro to literally 100% go for the kill at first sight lol, that wasn't a gag moment or anything. Although it also wasn't necessary, but why do you think that is?
Just think
I understand your point and i used to think the same for some time, but i quickly changed my mind because it simply doesn't make sense narratively.