The source for your article is The South China Post??
What comes next is very simplified but it does carry the main points of the argument - there is a high probability that the current human China Virus was man made/modified.
I am well aware of the difference between the bat virus and the human China Virus. While the bat virus samples found near Wuhan has a 96% match to the human China Virus, the bat virus lacks a 15 amino acid sequence that codes for the protein the produces the spike that makes it easier for the human China Virus to invade a healthy human lung cell.
There is another mammal, pangolin, that has a sequence that codes for the spike but is only a 90% match to the human China Virus.
I don't fully understand this part but the % match has to close to 99% to identify the sample as the host organism. The pangolin % is only 90%.
What is missing is some combination of the bat/pangolin virus. It would be like the bat virus but also contain the 15 amino acid sequence found in the pangolin. It is called the host organism Has not been found.
It should not be that hard to find. It would be a mammal, that resides in the Wuhan area, that comes in contact with humans. Has not been found.
Could it exist in Nature? Yes. However, would somehow have to explain how the 2 viruses from bat and pangolin mixed and then breached human defenses. Or maybe the host organism evolved in another way but -Has not been found.
If not in Nature then the only other alternative is a virus lab.
In a virus lab the origin could have been either some hybrid bat/pangolin or directly change the RNA sequence of either the bat or pangolin. I would go with bat because less would have to be changed.
Many are saying that the current China Virus was not produced in a lab. However, they give no other explanation for its origin except the bat in the wet market which is wrong.
All we need to know is could the current human China Virus have been made in a virus lab. The answer is yes. The current human China Virus is not the most elegant but it still works.
So if it is possible to make in a lab, there is a fair probability that it was.
A big, big, question is why there where gain of function experiments going on to begin with at the virus lab in Wuhan?
Again - not working on a cure for cancer.
The current explanation of why the Wuhan virus lab was working on gain of function in infectious viruses - and it is really a stretch - is that China was trying to show the US and the rest of the world what kind of virus work they could do. (This has actually appeared in print many times as an explanation??) Meaning that China was trying to demonstrate to the rest of the world that it could handle sensitive virus experiments. Wow!!
The origin of the current Pandemic is a very sensitive political issue. We will never know the actual sequence of events.
Maybe you need to run your posts by a nucleic acid biochemist for editing.