What does the UK, France and the Netherlands have in common?

[Husar]

And that's what the British should be recognised for.

According to British people and their colonial collaborators...

We used slaves, as did everyone who could. But we stopped using them because of a moral argument, and very few countries in history did so. And alone in history, we devoted huge resources to backing up that moral argument, actively stopping slavery as the societal norm. The first bit of our history is carped on about, as the story of the evil British. As we moved more and more towards what is the modern ethical norm, in many cases defining it ourselves, more and more of it gets ignored, so as to maintain the story of the evil British.

The modern British people did not commit that, they just inherited it. If the modern British are evil, it's just because they continue to support bankers who caused a huge economic downturn and ripped off the taxpayers.

But their history museums celebrate the economic and social programmes that the British left behind, and the complaints are about what they see as Chinese exploitation of the territory without the parallel care about the health of the society that the British attended to. Funny to see the things the British are often accused of, used to criticise their successors.

First of all, you claim that you built almost everything that Hongkong has and is today, so you probably also built the museums that celebrate you. -> doesn't count.
Secondly, modern China may not be the communist country it is today without the early negative capitalist imperial influences that made so many people turn to communism. So while your net influence on Hongkong may look positive today, your net influence on the entire rest of China was a lot worse as you say yourself.

Really, don't analogize states to individuals in this context. It doesn't serve your position and it creates if you think it through.

I was merely saying that the net benefit does not equal justice. Not on a personal level and not on a state level either. Would you like to die fighting a Chinese invasion even if there were actually a net benefit for the USA in it after 300 years of Chinese occupation?