Because of her/his statement that this is propaganda. It is not. It is simply a pictorial view of rural North America during the 30's. It could also apply to the 20's, the teens, etc. Hell, there was one community about 65 miles from Albuquerque that finally got electricity about 15 years ago. These pictures and the article have nothing to do with today's conditions and we cannot compare our current situation to theirs. So it is not propaganda.
A troll would be jumping to conclusions about the motives for the release of the pictures.