I don't know, nor am I in a position to really have an opinion on this, but it might even be as small of a reason as "hey I want to get published"

The PDF itself is MS Word, has numerous typos/little care (words like 'alingment'), random font changes back and forth between Times New Roman and the default MS Word font (Calibri?))

For HIV related fearmongering about "well, why would they know to treat it with HIV meds??", people are looking at this already because previous SARS-CoV has previous investigation with HIV medication, it is not unique to nCOV: https://www.ncbi.nlm.nih.gov/pubmed/14985565, https://www.ncbi.nlm.nih.gov/pubmed/15144898, https://www.ncbi.nlm.nih.gov/pubmed/14519691 - these are from 2003-2006.