Nice article David.
I would definitely go with those guys but the logic against it still makes sense to me, and though not statistically significant by any means, I have seen enough cases first hand to stop me from doing it if the ATF already looks burnt by the time of replacement.
Not to mention I'm surprised they recommended the flush machine. The tranny guys I hung out with used to love that thing cause they thought it was one of the reasons why they got so many rebuild jobs. Their idea was that the machine can cause crud to dislodge and go block the many tiny orfices in the AT. Not to mention several manufacturers also seem to recommend against the machine, and recommend just dropping the pan and replacing the fluid while leaving the 30% or so in the torque converter alone.
This seems to be one of those questions that you get a different answer from everyone you ask
Either ways, it's just one more reason for me to get a manual
-gc