It is worth less in the sense that its impact is less than it could be. Like for example, would you be moved by such a statue being set up in Pyongyang or in 1946 Germany? Of course not. The statue only works because and as long as Europe, the EU, Belgium or the artists who created the statue can claim a moral superiority over China. That superiority largely hinges on whether and how past atrocities are admitted, rectified and prevented from happening again.

Also, what has people like the commenter above outraged is that such a statue is not displayed in a contextless moral void but serves as a propaganda tool to diminish Western or European human rights violations in past and present - even if not intended by the creator. "But look at China" itself is a huge whataboutist argument. If the moral evaluation of states and such is too emotional a topic to see this point, then maybe you can see it at work in the climate catastrophe. "But look at China" has been and is a very popular argument despite being both completely illogical and actually wrong, and it's a danger to the continuation of our civilization.