I did -- and I read the original paper:
Lineage-Specific Expansions of Retroviral Insertions within the Genomes of African Great Apes but Not Humans and Orangutans
If the subsequent insertions are truly not orthologs, and "few if any" are, it is still problematic that gorillas and chimps were subject to later re-insertion but humans were not (resistance/susceptibility hypothesis) despite their overlap during the Miocene era.
Resistance/susceptibility is one possibility mentioned in the article, but ScienceDaily failed to mention a few of the others.
First is habitat difference, an epidemic in heavily forested areas but not pandemic onto the lowlands and savanna where humans found their niche.
Second is that PtERV1 sharply reduced survivability of human fetus/children, and the lower fecundity of those with the insertions would have been overwhelmed by the populations without.
Third is an Out-And-Back-to-Africa scenario. An uninfected population (from Asia) returned to Africa after the virus ran its course and subsumed the remaining hominids.
My mind is open and I patiently await the results of further research.
Very commendable.