The implications are rather ominous. It's difficult not to read "it's an engineered virus" into sentences like "similarity of novel inserts in the 2019- nCoV spike protein to HIV-1 gp120 and Gag is unlikely to be fortuitous" and "our findings suggest unconventional evolution of 2019-nCoV" - quoted directly from their conclusory paragraph.

Why was this deleted?

Maybe it’s considered to be a dupe of https://news.ycombinator.com/item?id=22204866

It's an unreviewed pre-print paper so I tried to delete it but kinda late