This feels oddly familiar to me, kind of like this particular forum member is once taking advantage of this site and some unsuspecting contributors to exploit people's generosity.
My take on all of this is that owing to the problems that Oneida experienced when they released their Festool-specific Dust Deputy, some sizable portion of Sandy's perspective customers legitimately raised the issue in regard to the Dustopper and its utilization in the design of his "Festopper". Seemingly taken unaware of the potential for issues with static electricity build-up - and rather than fund his own R&D or come clean here about his concern that maybe he's released a product that might fry people's $700 vacuums - Sandy's back here again fishing around for free information that he can use to reduce his liability and beef up his bottom line.
That he was oblivious to the controversy between Thien's baffle and the Dustopper was concerning. That he didn't know the difference between non-antistatic hoses and anti-static hoses (or seem to comprehend the issue of static electricity build-up as a concern in the design of dust separator systems) and that he mocked the language that's used to mark the difference between hoses that won't fry your vac and those that may is alarming. These examples only further reinforce the feeling that I've had along that he's only out for himself. I don't know why my fellow FOGGERs keep falling for his sleazy antics.
Anyone looking for the right way to bring a new third-party Festool accessory to market would do well to avoid using the Festopper as an example and instead look for guidance and a set of roll models from a group of folks like TSO Products or the like. This whole thing stinks.