I think what you're running into is an unexpectedly strong opinion from many of us about what we have found, often the hard way, to work well for us.
Clearly, if the Asics Kayano works well for you, then run in it with my blessing. But I, and I suspect several others here, simply found that using the best offerings of the shoe companies and following the advice in magazines just did not work for us. This has evolved into something of a subculture looking for low-heeled simple shoes, and there is nothing surprising about this. "Return to basics" movements are not new news in many areas of endeavor. Most of us doubt that Asics is likely to improve on the mechanics of a healthy functioning foot, and the writings and experiences of most runners from the 60s and 70s (when shoes really were pretty basic) as well as numerous coaches (Lydiard writes specifically on the topic -- try Running to the Top pg 74) reinforce this.
As to podiatrists and experts -- I have no problem with them. But it is hardly a new concept that medical professionals, with the best intention, go in a wrong direction; especially when dealing with healthy people, as medicine tends to focus on diseased people. Remember phen-fen, hormone replacement for women, or the low-fat high-carb diet (and next year maybe we'll look back the same way at the high-fat/protein low-carb diet)? Remember spine surgery for back pain? Remember psychoanalysts trying to tell us what kind of orgasm was right or wrong? (On the topic of orgasms, let me just say yes.) A podiatrist I like put me in orthotics and Brooks Beasts about 8 years ago. It's not really his fault -- I had a bad knee, was by then in my 30s, and this is what his training dictated. It's just that going in the opposite direction turned out to work better for me. Doing this, I've had five years without major injury, am in my 40s, and ran 3 marathons over one recent 8 week span (including Boston) -- all in simple shoes.
Actually, I think this is an opportunity for a shoe company and/or shoe stores -- just make (heck, even custom make) really simple shoes (you could even call 'em running moccasins, and boast about the complete lack of technology), and I'll come buy 'em.