But if yes, then as long as current conditions meet anyone’s definition of utopia, then we’re all living in one.
No, Utopia has a defined set of meanings. If current conditions meet someone’s definition of Utopia, but doesn’t meet the defined set of meanings, it doesn’t mean current conditions are Utopia.
Let’s go with the Cambridge definition:
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.