His use of the term liberal in this context is going to confuse some people, but it is not inaccurate.
It certainly is. I read the article and it didn't really offer context for his use of the term liberal,. However, ironically he seems to be supporting broad-based liberal arts education which is quite contrary to most modern day political conservatives views that a college needs to be pretty much all stem research or hard Sciences, because someone needs to use their degree to make cheaper larger TV sets or diet pills, not actually learn how to exercise critical thinking.