This may be true, but it sounds an awful lot like what every salesman says when one complains that a product doesn't do what it promised. A more constructive attitude, on the part of the company, is to realize that for every person who complains, there are x people, where x is around 5, maybe more, IIRC, who have the same issue but haven't complained, either because they're too busy, or haven't stressed the item to the point where the flaw shows up.
More generally, a lot of our gear is virtual gear, in that what we're really buying when we purchase it is a sense of possibility -- "Wow, I could actually survive a blizzard now" -- but then it may never leave the closet. I'm as guilty of this as anyone, and I actually get out a quite a bit. So, if you're a manufacturer, the temptation to shade the truth, since so many of us are influenced by stated specs, must be large.