Of course I still don't know and my ideas regarding the latter have changed because of this article but I'm now pretty sure that I don't have enough information to invoke Occam's Razor in any kind of insightful or effective way.
Undoubtedly after looking at the sequences of that paper, there were some alignments, but how they were structured doesn't point to being engineered, but rather of co-infection, which did not match the conclusions of the paper.
What they do actually indicate might even be more politically inflammatory. That the virus evolved out of a recombination event in an HIV infected person infected with a SARS-like virus, and repackaged as a new SARS-CoV-2 virus.