Re: "we need clarity on what the laws will involve before we can decide anything"
It matters a very great deal because the law will be a Hong Kong law with prosecutions managed by the Legal Department of Hong Kong Government and administered in turn by an independent judiciary steeped in and applying principles of the Common Law - which includes principles of parliamentary interpretation and "Innocent Until Proven Guilty".
It follows that there is no hijacking of the legal system - any more than - in fact less than - UK legislation once could be applied territorially to Hong Kong by Letters Patent and Hong Kong laws could ultimately fall to be interpreted by the Judicial Committee of the Privy Council.
Then purporting to predict the future course of laws is losing the plot completely. This manoeuvre from Beijing is a direct consequence of violent protests last year, in the absence of which there is no reason why the PRC would want to interfere with the HK system - which is where the article is completely wrong - now or even in 2047.
Tossing out a mantra of "freedom" relates back to the first point. None of us is free to the degree implied by such a mantra. Freedom is knowing one's limits with a clear law. If alternatively a person wishes to be free to burn the flag and insult the sovereign power - not even relevant when most people are concerned about their livelihood and their families. As are the expats. Which is why there is no brain drain. Schools have reopened, Shopping malls are bustling - and nobody wants to go somewhere the handling of the Covid-19 pandemic was so ineffectual.
Blood? How silly. Tienanmen Square was more than a generation ago, China has changed. The World has changed Xi Jing Ping will NOT want to taint his legacy - as emphatically proven during the "protests" by the admonition that "Hong Kong's problem. Hong Kong fix it".