That's because his maths "proof" was lies. He claimed it proved something about waves when it did no such thing. And then he responded with irrelevant stuff about electromagnetic mass he had quickly looked up on physics stack exchange, to try to bamboozle you at least, and possibly me, too.
Look, in real life we all make judgements about who to listen to and who to ignore. Nobody is under any obligation to take seriously the ravings of the nutter on the street corner. If we did that, we'd not get anything done. So it comes down to the credentials of the speaker. Borg instantly forfeited any claim to be taken seriously with that maths nonsense you cut and pasted. And then I looked hm up and, surprise surprise, found he was listed in the Encyclopaedia of American Loons, which confirmed my suspicions. And then I found this nonsense about "COH2" on his website. It is all hogwash. That is why I don't bother to listen to any further arguments of his. He does not merit it.
But you go ahead, I'm sure it all makes sense in Trumpworld, what with alternative facts and all. I know, I'm trapped in a "rigid paradigm"......they laughed at Galileo (well they didn't, but never mind, we get the idea).........I've heard it all before.