Earlier quoted context omitted.
It's fairly clear from the article, and from the report it's quoting [1], that the discussion is about wages, with "poverty" used as a shorthand. The source report also says that "the poverty level wage in 2013 was $11.45." I was able to find that definition with a casual skim of the source report. (It's possible that they go into more depth about their methods; I didn't care to look.) Your inability to find it, comb…
There is nothing hyperbolic about saying the poor are better off today.
http://www.theatlantic.com/business/archive/2014/05/its-expe...
The data in this article is on the timescale of the last decade, but it's enough that your claim doesn't really stand on the basis of being self-evident.