There isn't a single source for the material besides the original 2016 memo? It's funny that the article should mention 'Another theory floated by multiple emp

There isn't a single source for the material besides the original 2016 memo? It's funny that the article should mention 'Another theory floated by multiple employees is that Facebook has been targeted by spies or state-level actors hoping to embarrass the company.' because until proven otherwise, the whole article is just one Comcast subsidiary's hearsay about another company.