It's interesting that the author uses a time killing game as a yard stick for the waiting period - as if the time spent while printing was 'dead' and couldn't possibly be used for anything productive.
That's his point - for the purposes of using the makerbot, it is dead time. You can't iterate before you have something, and you can't have something for 5 hours with a 33% chance that hardware failure was the problem and not the design.
What we're really seeing here is the impatience of the Now Generation. What? You have to wait -thirty minutes- for something to be produced?? OMG!
That's basically the same as having to wait 5 hours, right?
Have these people any idea how long it takes to produce something through conventional CNC, let alone hand fabrication?
How many amateurs are willing to burn virtually all of their free time for a day to do those things? Very few. Comparing your professional abilities and patience to his amateur abilities and patience is unfair (to put it very kindly).