Ultra was able to successfully decrypt Enigma messages because the British evacuated Polish code breakers, so I suppose it's a good thing those people didn't stay and fight.
The Polish resistance saved tens of thousands of Jews from the Holocaust and gave a ton of information to the Allies, so I suppose it's a good thing those people did stay and fight.
Tens of thousands of Polish soldiers (under the direction of the Polish government in exile) fought with the Allies throughout the war, so I suppose it's a good those people left and fought.
Just some random thoughts, everything is complicated.
Not to offend anyone, but Americans haven't really demonstrated any ability or will to fight for their rights as a nation in the past 100 years, this posturing I see all the time from Americans about freedom is like a peacock displaying its feathers, not having done anything to earn them - you were just born with them.
Examine Hong Kong’s strategic resources at the moment and tell us how you would deploy them in a fight.