This doesn't really make sense, of course. A finite resource remains finite whatever we do. Evidently, as said some Saudi oil minister, "Stone Age didn't end by lack of stones"n however we face now a very different situation : the end of cheap petrol is near, but we still have no better or even just roughly equivalent alternative.
As some remarked, until now we always went from one main energy source to a better one (animal and human power to coal, coal to oil). We have no better energy source in view.
Sure, we could be optimistic, or pessimistic, however we know for sure that humans already met decadency by environmental destruction and resource exhaustion several times, therefore I don't think that we should just sweep it away with a "Malthus was wrong!".