I think its very disingenuous to use the reputation of the article to also push for a " no skills shortage in technology" view. The original article is well researched and based on facts, whereas the blog posts you link are not.
General: https://www.nytimes.com/2014/03/31/opinion/krugman-jobs-and-...
http://www.epi.org/publication/shortage-skilled-workers/
Tech: https://www.theatlantic.com/business/archive/2013/04/the-myt...
More tech: http://spectrum.ieee.org/at-work/education/the-stem-crisis-i...
Manufacturing: https://www.sciencedaily.com/releases/2016/08/160815134829.h...