Freedom of speech and I guess HN is an international community? On the post, as the author said, seeing is believing. Whether or not it's CCP propaganda, it's facts.
“Seeing is believing” really doesn’t make any sense in the modern world. And facts don’t exist in a vacuum, they are presented with a specific narrative, some are just omitted, some are plain lies (China bringing joy to Tibet population by providing better food, really?).
I find it informative to see other points of view and an impressive number of facts that are presented in this Quora answer, rather than just the Western point of view, which arguably could be also called as "propaganda". Let's not go this route.