Of course there would be increase in bitcoin purchases in Hong Kong. Think about what would you do yourself. We are talking about a whole nation (well sort of nation) getting a pressure from another nation that they are super tied with and that big nation is basically killing you right now and making laws all by itself and demanding the nation to be ruled however they want.
You can't let that happen but you see the chaos and you see people protesting, you are basically facing the fall of your government even if not in democratic ways it is definitely not doing well in popularity. It means these people will of course will take their money and take it to bitcoin, I don't know how much it will affect bitcoin itself as a whole but it definitely will affect the adoption rate in Hong Kong.