For a professional writer, he sure wasn't clear. That's for sure.
It's just too convenient that Jerome Armstrong doesn't fall into all the categories he earlier mentioned; politicians, organizations, groups, etc
He falls into the "directly or indirectly" part of the statement. Kos's denial of the charge is pretty straight forward. He's not writing "for hire" and he's not getting anything "directly or indirectly" from anyone.
SD
Of course he does. But that doesn't belie some other quid pro quo from existing. He writes strictly of "source of 'revenue'". Such a phrase can be exclusory of other forms of compensation.
Perhaps I was off the mark when concentrating on the idea of paid compensation. I don't know. I only know that there is something fishy about his endorsements, changes in endorsements, acceptance of paid parties given by political office seekers, and the 'consulting' work of his buddy/co-author.