Not as far as I can tell. There is nothing in the protocol suggesting they altered the point mutation rate; and the rate they quote is pretty standard. They could have increased it by adding a mutagen; but since the rate was already high enough to produce a few individuals with every possible single point mutation in each generation, they didn't have to.
You're going to a lot of trouble to set up human-engineered circumstances to equate what your educated guess of randomness is. That's, um, not random.
Please indicate how they manipulated the 'randomness'.