Earlier quoted context omitted.
Even worse, some sites disable scaling, but let their content overflow the width of the screen without any possible way to see it. If you're going to use user-scalable=no, at least make sure that your code blocks and images resize to fit on mobile screens (or viewable separately).
This isn't necessarily a problem as more sites become responsive and make a proper effort to accomodate mobile browsers. Where this will be a problem is poorly written desktop only sites that just make the change to get faster mobile interactions. I hope this encourages more of the former and less of the latter. EDIT: If you don't agree why not explain your point instead of randomly downvoting. I believe this change…
It gets even worse when designers sell those themes to non-technical people, who have no way to fix the mess the designer caused by disabling scaling/scrolling.