The problem described in the edmunds thread does not sound like the same problem this thread was started to address.
The problem on the edmunds thread looks to be lousy timing. That is, the driver and the TCU are not working together to time the shift correctly. Nearly every trans I've ever driven (auto OR manual) could be made to have the same problem... I think a few people are getting it more often than most others just due to their driving style.
That's different from an unnecessarily harsh upshift on acceleration, which is what (I think) the poster in this thread is complaining about.