I only wonder how people managed to misconstrue the quote. Do people still think Australia never joined United Earth, or just not in 2150?
Crusher was obviously posing a hypothetical, but if you change the emphasis, you might get this:
Crusher: "Well, think about Earth. What if one of the old nation states (say Australia) had decided not to join the World Government in twenty one fifty? Would that have disqualified us as a Federation member?"
So her question might have "What if
only one, instead of
several of the old nation states ...," or "instead of
half of the old nation states ...," would that have disqualified Earth?
If instead of a sizable portion of Earth's political landscape including Australia not joining, it had been a (relatively) small minority of dissenting Humans from
just Australia, would that have changed things?
Actually, it likely wouldn't have disqualified Earth, given that Earth wasn't so much joining the Federation, as creating it (with others). Not being a one world state wouldn't have made a difference in that time period. If the Federation changed the entry rules later, members who entered previously might have been except from the additional requirement, their current politically diverse status being "grandfathered" in.
Having to be a mono-state might have been something resent to the episode in which it was mentioned. A new qualification.
"Hypothetically, if man had landed on the moon in the late sixties..." You'd get the impression that he thinks it was a hoax.
"Hypothetically, if
only one man had landed on the moon in the late sixties..." You'd get the impression that he meant less than the four who actually did (eight more landed in the early seventies).
It's wishful thinking ...
Nothing wrong with thinking.
