Craig Kelly's facebook page may not be the best source of scientific information.
https://scholar.google.com/scholar?s...=en&as_sdt=0,5
Here's a link that leads to 18,000 scientific articles about hydroxychloroquine, the overall opinion seems to be that while it may do some good, it also has side effects that result in more harm than good. To dismiss the work of hundreds of researchers as "nut jobs" is not an indicator of good research skills.