Well the Dallas donuts have gotten quite popular here as well as in Minneapolis, Houston, Kansas City, Omaha, Sacramento, San Fran, Seattle, Portland, Salt Lake City, St Louis, Atlanta, Nashville, Washington D.C. parts of Chicago and etc, etc, etc...
Perhaps so much $$$ is at stake that it doesn't matter how much stink is raised about the designs of these projects.
Oh btw it sure seems as if the fire code has been tweeked as what if a big blaze breaks out and the sprinklers are unable to confine it? Maybe they use extra thick sheet rock in the construction of these units as well as other fire reducing materials...