Actually while the kuomintang (who united all of china under a more liberal governemt than the communists ever established) were fighting off the japanese in WW2 the Communists under Mao were hiding in caves preparing to overthrow the governent. They did not support their own country even when the war against Japan cost more than 20 million lives.Tell me that you know nothing about geopolitics without saying it! "taiwan is a country"....
Such topic isn't talking about politics but actually about history and how taiwan was established and why it got insta support and investors from those countries that wanted to show the world that the communism was the big evil, if you take a book or two about such subject you will find out why you can't call it a country or pretend it to be a free land as it has always been part of china, united states or their allies can't just declare the freedom of certain territory that belongs to another country just because they support it.
Obviously for china government those declarations are hostil and anyone supporting those ideals are doing the same, that is like if you tell the british people that the malvinas are free and they belong to argentina, people should just mind their business instead of pretending high morality or high ignorance in some cases but i guess sadly the world is just full of it.
Now after the war they actually came to power thx to the support of the soviet union in a civil war.
They annexed tibet.
The CCP also caused the worst famine in all of human history with up to 50 million dead in peace times.
They erased all of traditional chinese culture and the cultures of minorities under their control to replace them with communism.
They fought a war against Vietnam in 1979.
they are running concentration camps in xinjiang.
They murdered more than 1 million prisoners of conscience (falun gong practitioners and Uyghurs) in the last 20 years to harvest and sell their organs.
They caused the worlds worst pandemic since since 1920 (either through lab leak or the wet markets that they promised to shut down after SARS-pandemic in 2003/04)
You stating that the CCP holds any legitimate claim to represent the chinese people doesnt show knowledge of geopolitics, or basic human rights or history from your side at least.