I think it's perfect. It's hard to miss the giant white sidebar that pops up. Actually, I think it's safe to say nobody is going to miss it. Keeping immediate a

I think it's perfect. It's hard to miss the giant white sidebar that pops up. Actually, I think it's safe to say nobody is going to miss it. Keeping immediate attention on the hamburger icon that now switched to an 'x' gives users information on how to close the sidebar if they wish (as opposed to swiping it left or something). If the "distracting" animation we're omitted, the site could have a different problem that users didn't see the 'x' and now don't know how to close the sidebar. I think this site found a perfect balance on usability.