As far as break-in and cables and stuff like that, there's just as much controversy there in the "Head-Fi" web-site as there is here! As a matter of fact there are a couple of specialized "No Flaming" forums within the site for folks to talk about such stuff amongst themselves away from those who think it's just a bunch of bunk! About the only thing that's tolerated, somewhat, is break-in and a tolerant nature toward just "touching on cables".
I've seen instances where a discussion on the regular forum turned to cables and was deleted by a mod after the members were warned to visit the appropriate "no flaming" forum!
The associated vendors sites selling their wares of course are far more open!!