* The very first sentence is horribly misleading, as intelligence (among other things) was necessary to avoid dying in wars or starving to death before then. This describes every decade in human history before the 20th century.
* It also only applied to white men in the US (or Western countries) in the 50s. African Americans, women, people in India surely feel differently about how the 50s were for getting jobs.
* The author blatantly ignores Duke Power, which generally bans IQ tests as part of hiring.
* Apparently decreasing poverty is impossible, but all of the author's proposals aren't.
* The author dislikes the term micro aggressions, yet immediately uses it to refer to calling anything "stupid".
Duke power only bans IQ tests if you can't show a correlation between job performance and IQ. If you want to use IQ tests you just need to do the studies that show that IQ is an important factor for the position you are hiring for.
I disagree with basically every sentence in the article and don't even know where to begin.