Just read his vector/scalar paragraph. Good stuff. Not seen anything this stupid in a long time. Do you want me to tear his stuff to shreds line by line or shall we just leave it that it is nonsense?
What's really funny is when he does state something correct, he claims that no-one knows it, except possibly Feynman. What an idiot.
What the present vector system of EM does, therefore, is throw out the ability to use the very strong EM force as an agent to curve local spacetime. The very mathematics itself, a priori, assumes and guarantees a locally flat spacetime.
Hmmm, so I guess I've never studied Einstein-Maxwell theory? Never taught the Reisnner-Nordstrom black hole? Strange...
In fact, it can be shown that the E-field and B-field do not exist as such in vacuum; only the potential for the E-field and the B-field exist in vacuum. Feynman pointed that out, but nearly all of his modern cohorts seem not to have recognized that fact.
Strange, I can pull out just about every grad text on my shelf which will say this. But then, they're probably a bit over his head. What's even funnier of course is that it isn't actually true if you allow non-trivial topology... as our friend Wheeler was so fond of pointing out.