The US issuing travel advisories really is no measure. I get such warnings if I go on business trips to Tokyo! I don't recall getting one when I visited our US offices on business though. Should have been a copious amounts of mayo and other unnecessary crap in your deli order (but you can opt out).warning together with a tasty knife and gun culture.
As for HK it will just be slightly more shades of Mother than before Covid, before the NSL and before the umbrellas and an expat forum full of people moaning about their lot but doing nothing about leaving (because the money's good you know!) and at some point Sage will be telling us how right he was on anti mask wearing stance