"This article strikes me as a deliberate re-spinning of a story meant to be triumphal"
^ This right here.
There are many things to say about the damages caused by colonialism, but complaining that it's not covered in a book about Chan (who got immensely successful), in Hong Kong (which became very wealthy) in the 1960/70s (while the rest of China was basically burning down) misses the mark. There is a historical context that is quite specific to Hong Kong: the majority of its population actually moved there post-WW2 to escape the troubles on the mainland. Moreover before its decades of unrest, China had been ruled by the Qing, whom most Chinese considered to also be colonisers (the Qing were Manchus who imposed their customs on the Han Chinese majority), so in that regards the British were not some sort of uniquely evil rulers, they were yet another bunch of invaders, who happened to be slightly less violent than the other ones next door.
I think that's why Chan ignored the colonialist angle: it's kind of hard to hate on a city if your family willingly moved there. And yes there is hardship and injustice, but in the rest of China people are either getting purged or are literally dying of hunger. I believe his apolitical view of that era is quite common amongst his generation: yep HK was ruled by some foreigners for a while, next chapter please.
There are some Brits who would tell you that HK developed "thanks to" the UK (I am of the opinion that when a colonised city surpasses even the UK's GDP without being granted any meaningful democratic rights, they succeeded despite your rule, not because of it). This article takes the opposite position but still implies the same thing, that Hong-Kongers were victims with little agency, which I find patronizing when in reality they where a city of refugees who brilliantly navigated a difficult era. Likewise presenting Chan's physical trauma as representative of Hong-Kong's development strikes me as completely off. Lots and lots of people accessed the middle and upper class in the 70s and 80s. Most of them were not stuntmen, it turns out. I must say this is the first Western review I see of this book, and it's the first one that brings colonialism up seemingly out of nowhere. There is a little bit of "Chan's story is not really about him, it's about... us! the Western people" euro-centrism here, IMHO.
Also, since everyone is naming their favourite Jackie Chan movie, have a look at Project A and Project A2, they're a lot of fun (A2 actually tackles some colonialism-related topics in passing).