It's going beyond screwing up mobile. I've noticed over the last few months a great increase in the number of major sites that are crappy on the desktop, too.
For instance, many sites behave poorly if you have the audacity to use your browser's zoom feature. Their floating social sidebars intrude into the text, or the margin goes completely away, or the text extends into the sidebar.
It's getting to the point where blog spam is often preferable to the original.
ExtremeTech does think they're optimizing for mobile, though. What's really amazing is how they apparently never use their "optimized" versions themselves.
