[mundizzle]

it's not a myth. just look at CSS Zen Garden - http://www.csszengarden.com/

if bootstrap markup becomes the lingua franca for common UI patterns, that's a plus in my opinion. no need to reinvent the wheel for something like a set of tabs.

[mddw]

Which is a (cool but) fake website. I've never seen a redesign keeping HTML code. Even when the code is very good and the separation well done.