I wasn't applying the monkey typewriter quote to natural selection, if I was unclear about that it's because this is a forum, not a peer reviewed paper I am working on to submit for publication. I take some liberties with my review of what I write. I was speaking in general terms of the universe itself and all of the incredible chain of events that had to occur from the big bang to arrive at me sitting here typing away if there was no supernatural component. The quote was aimed at why isn't that (fill in the blank) possible?
If we are talking about the natural selection portion of evolution then no, natural selection is not random. However, if we are discussing evolution in general, my understanding, and I'm sure you'll correct me if I'm wrong is that evolution has at least three distinct parts. First you have the generation of mutations which is thought to be a random process with some qualifications. The next part is random drift, more or less a roll of the dice that decides which changes are kept and which are lost. This is caused by accidental or environmental events and many mutations are lost. The random effects of drift can overwhelm natural selection in small breeding populations and many mutations are discarded. The third part, natural selection, preserves the beneficial changes and mutations and is not random.
Evolutionary theory is certainly not my area of expertise, but I've had enough crossover in my education to understand the fundamentals that evolution is at least partially random, and the monkey typewriter quote would be applicable in part at least to the process.
I think it's wonderful that Ex-B has come far enough to at least ask some questions and draw some conclusions and exit a mind controlling cult. My word that's enough accomplishment that I want to throw a party. I would submit that at this point asking Ex-B if he is willing to examine any of his conclusions and be open to examining them would be the next step. Small steps sometimes are all we can manage after a life of indoctrination and misinformation. If he is not, then I would bid him a good day and wish him the best in the new clarity he has found.