Earlier quoted context omitted.
No one's swapping out the entire population. But populations change, when people move, demographics recompose, and local customs accordingly. HK nativism/localism rose after ~150/day “one way permits” from PRC to HK (for the wealthy and family reunification) led to 1/7 (15%) of the city's growth coming from mainlanders in 20 years. That's relatively fast, as is visible within a generation, but also about as subtle as…
> All these arguments defending that only HKers should determine HK culture forgets that PRC "immigrants" to HK are NEW HKers and get a voice too, even if the flows inevitably shifts them towards becoming "just another Chinese city" - as if Chinese cities are all homogeneous. Maybe think about the "why" instead of just complain? Try to understand things instead of just saying they suck? - Can you use Facebook, Twitte…
Sure it's not the same anymore, but HK status quo was not sustainable, especially on national security grounds from where they basically had carte blanche to commit treason and be spy capital of Asia/PRC by slagging on NSL implementation for 20 years. Bringing "rule-of-law" to pirate cove sucks for the pirates. Yes they had a very good setup where they can flaunt increasingly unearned superiority to the mainland, but no reason why the mainland should maintain that arrangement in perpetuity, especially when it's received so ungraciously. As for your list, post NSL HK, you can still access foreign social media, death penalty still abolished in HK, you can still talk shit about gov (granted you don't conspire with foreign powers / undermine one country security), like a handful of folks renditioned by PRC post handover is pretty mild for the shenanigans HK was up to pre revolution, and HK still hotbed of capital flight. Yes a lot of perks are justifiably constrained, because they never took the one country part of 1C2S seriously.
Again, I get why locals went nativist and think post NSL HK is reduced - and it is - but they're still dripping in special administration privileges. Meanwhile it's great for PRC nationals now, which is frankly how it ought to be. The optimism that mainland would move closer to the HK system instead of vice versa was always hubris to anyone who looked at the numbers. State side, alt right Americans got away with as much as HKer nativists, until they stormed capitol/legco. That's when the hammer drops anywhere.