To burn enough lime for a large pyramid, one would need A LOT of wood. An 8 megaton pyramid - say, 2000000 ton of lime. 20 years time frame. 100000 tons of lime a year, 300 tons of lime a day, something like 1000 tons of wood per day. Egyptian expeditions to upper Nile were never large enough to pull out this kind of logging. And Egyptians in Lebanon date to much later times.
They weren't talking about using the manufactured blocks to make the whole thing, just the top portion of the stones used as a dressing, which would be a small percentage of the total blocks used.