I'm aware of who he is, and the context of "liberal" when referring to him and his views. I'm offering an explanation as to why someone might describe him as "liberal", because if anyone outside the US listened to his viewpoints they would describe him as "liberal". I'd be willing to bet that the original commenter is not American, and that's why they chose "liberal", not to be misleading, but because literally the entire rest of the world uses the word differently.

"USA: the primary use of the term liberal is at some variance with European and worldwide usage. In the United States today, it is most associated with the definition of modern liberalism, which is a combination of social liberalism, public welfare and a mixed economy,[12] which is in contrast to classical liberalism."

https://en.wikipedia.org/wiki/Liberal_parties_by_country#The...