Well, you could also paraphrase what he said to be "You can't trust Occam's Razor if your data set is too small." That seems reasonable to me at times, though it may still look like (or be) a weak counter-argument.
The other guy's article with a time rewrite wave system is interesting but seems to imply that time travel creates new universes with each alteration to the time flow. This looks like a violation of the conservation of energy and matter law. Said in other words each time travel event creates a new time-line branch (or slice), where the original stays the same (and continues without the time-traveler) but a new version of the time-stream is created with alterations made by the time-travel event.
If time-travel creates new time-lines without changing the original time-line, if it creates an entire copy of the universe (minus time traveled back), the energy requirements to create a time-travel event would be equivalent to breaking the speed of light, ie infinite; or if the universe is finite, equal to the sum total there of. Time-travel would then be only possible theoretically as the attempt to use that much energy would violate the laws of physics before you got very far.
Any physical device constructed for the purpose would run afoul of creating black-holes from the concentration of matter/energy in one spot if you could even gather it in the first place given mechanical inefficiency and energy lose to say thermal energy that you cannot avoid without theoretically perfect materials. If you needed an amount of energy equivalent to the universe you wish to "go back in time" to visit, would the very construction of your time-traveling device waste the very energy you need?
Would you have to destroy the original time-scape to liberate the energy you would need to create the new time-scape of the universe as it used to be? How could you even be sure you could get it right or that time-traveler themselves would not also have to be destroyed for the grand total cost in matter/energy to be met? Matter/energy is not created after-all, the only difference between the past and the present of the time-traveler is the spatial and temporal arrange it is in. Sending the information would also be impossible and even if you did, what would there be to act on it?
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tldr: Time-travel in a Branching time-lines system would require infinite energy if it is not to violate the law of conversation of matter/energy as it would otherwise be creating whole universes from nothing. ie. Only by destroying the whole universe, time-traveler included, would you have enough to do it, to say nothing of being able to reconstruct it exactly as it was x-amount of time in the past, somehow.
