The author's answer to the question 'How do mainland Chinese feel about the protests in Hong Kong on the extradition law amendment?': https://www.quora.com/How-do-mainland-Chinese-feel-about-the...
Hong Kong still needs to pay for it, so it's not a gift.
The only reason for Hong Kong to bed an army, is China.
Like I said, smart propaganda. This is 1 guy evolving his comment based on discussion or a team of propaganda employees.