The best theory for his brand of loopy I've heard is that he thinks this matter-making molecule of his is the same one that makes Bruce Banner huge when he turns into the Hulk.
And Pangaea makes no sense to him, but this "growing Earth" theory does, because his "comic book artist mind" said so. Oy.
What is it with comic books being the depository for completely fractured personalities? You get Robert Crumb, Harvey Pekar, Dave Sim, Neal Adams, Steve Ditko, and many many others.