Remember its the INxx types who are overrepresented in artists who know math and science. He has some interesting insights in calculus and physics. Its interseting, this leftie southpaw made a claim disproving a lot of theroems of calculus and physics, both Newton and Einstein's! As of the conspiracy theories in his "art-blog" I would say he's got the big main picture at least.
Why I say INTJ? He does not go off tangents to different subject topics as frequently unlike others (David Icke, TheLogicJunkie, Mark Passio). He gets to the point telling you straight as is, that X is bullshit, with cited evidence rather than "evidence from ancient peoples" that David Icke and Mark Passio often do. However, the evidence from ancient peoples should not be discarded entirely... however Mathis' ideas are far more applicable. For example, with the math and physics commentary, it could inspire one to switch careers out of anything that uses math and/or physics. Regarding evidence on misplaced photos in media news events, it could inspire one to switch out of a journalism career or photography career. I also say INTJ because his personal drawings / photos on his website that has the conspiracy are probably best suited for adults only
Not sure about where to put a conspiracy theoriest without knowledge of traditional new age ideas, however I didn't put him in the science, technology category despite his numerous writings on math and (physics) science in his website. I'd say the category should be new age because thats the closest group of people who would understand his perspective. I like his ideas, hes very down to earth and very objective. Not sure what else, but he's a admitted left handed person.