Expanding on that, it should also be pointed out that this is well-known as being among the list of assumptions that prevent Turing Machines from working in the real world. We speak of "steps", but they do not have any actual relationship to "time". The tape has no obvious relationship to "space", either.

So, right off in the first sentence "I have recently shown that the concept of a Universal Computer cannot be realized.", I thought "well, it's hardly like that's a challenge..."

There's actually some interesting theory here, I think, but it's only obscured by being wrapped in rhetoric about Church-Turing being wrong and such. All mathematical theorems include a set of assumptions, and it's not news that if you change the truth of the assumptions the theorems may stop holding.