It is only a supposition, but I do believe that Honda has seen this problem enough that they know all of the ATAS's sold are affected to at least some degree. They probably don't even think it is worth the mechanics' labor in checking the tanks anymore. If a customer believes they have the issue, then order a pump, scrub the tank and replace it. I am guessing that there is not a single untreated ATAS out there that doesn't have at least some of that flaking going on.I admire your optimism! I truly hope that is the case and that is where we're headed. Time will tell.
It may be Honda's version of a "silent recall," which would be OK if it was guaranteed to work the first time every time. I can tell you/them, it is no guarantee. I have had mine done twice already.