A degree doesn't make you automatically right. The 'debunker' makes several obvious mistakes himself, such as the mass of the black holes. It is clearly stated in Titor's posts that they are around 200 pounds each, so that the machine is around 500 pounds total. And yet he insists on claiming that he couldn't possibly have a machine that size with a metric ton (2,200 lbs) of black holes in it. Well, since he doesn't
claim to have one, the impossibility of this 'fact' doesn't amount to a 'disproof' of anything, does it? This is called the 'straw man' in logic. A fake rebuttal of something that the other party didn't claim.
I repeat, he didn't claim to know the science, so his knowledge of the science isn't a worthwhile test of his reliability. Would you like to compare "Titor's" description of how his time machine works with the current 'man on the street' description of things like nuclear power plants or even plain old consumer PCs or passenger cars?
The internal consistency of the predictions is much more interesting. There are some potential problems, but it's been a while since I read the material and don't have the time/motivation to go back and find the problems I had noticed again.