G'Day Stuart !
Amazing isn't it ?
I snooped around a bit to try and understand where this guy Mathis is coming from. Apparently, he's an artist (not too bad a one, either). His qualifications (yes .. he does have some) are mainly BAs from US universities. I think he's into philosophy as well (I guess that also explains his interest in mathematics/physics).
I also notice he's published a few books (as Alex has pointed out). I suppose he could publish cross word puzzles or something, to entertain the masses (as an alternative to entertaining pseudoscience).
Publishing books seems a good way to improve one's income beyond that generated by just selling artworks !
The problem is, that I think he may actually believe he is a player in the field of mathematics !! (If he does seriously think this, then he's lost the plot as well, eh ?)
Cheers & Rgds