It sounds deep, but it really doesn't mean anything. Propaganda has a wide range of techniques, deployment, and permeation into society - some do it more than others, some do it differently than others.
The comment needs little elaboration. It's devastatingly clear and almost vulgar, all the more truthful for its strangeness.
It is not devastatingly clear. I have no idea what it's supposed to mean.
I think it's an unnecessarily coded criticism of the article (eg, that they think the article is propoganda, for reasons we can only guess.)
This is a quote from the article it it wasn’t actually quoted. The last sentence mentions Trump and it is likely triggering to his supporters who would immediately scratch off the entire contents as propaganda against him.