Mr. Graham is making 2 mistakes:

a) thinking that others don't understand exponential. Any reasonably college educated grad understands it well.

b) thinking that growing 93 percent every month means the founder has put in 93% more effort than the prior month.

Their argument relies upon the ideology that just because you thought and executed an idea profitably means you should continue to "earn" from it.

In the LLM age, more and more people are questioning this, and rather want to goto: effort == earnings.