Where exactly is this defined meaning?
utopia (noun) an imagined place or state of things in which everything is perfect.
According to Oxford Languages it is very much in the eye of the beholder and not objectively defined.
Let’s go with the Cambridge definition:
a perfect society in which people work well with each other and are happy
The Oxford Languages definition is incomplete enough to not be a valid counter argument - “perfect” doesn’t mean everyone 100% gets what they want. The only sensible interpretation is “perfect” from a societal perspective.
Well we may just have to disagree. Even your definition requires that everyone be happy, and cooperating. I think that goes against your earlier contention that regardless of what people want, utopia has an objective definition.
It is what people want it to be, and people want different things.