I had the pleasure of stopping by Tepui's facilities last weekend when I was out in CA for business. I just purchased an Autana from them a couple of months ago. They're just as professional and nice in person as they always have been on the phone, and over email.
Based on similarities in manufacturing with all of the RTT companies, I'm sure this denting "issue" isn't anything unique to Tepui. And obviously, it's not a problem or you'd hear more about it.
How's that saying go again? A satisfied customer tells a friend or two about his experience, but a disgruntled one gets on the net and blames everyone else.