Yes, that second image was initially hidden on iOS due to the scrolling bug in the site (now fixed). So they spotted what seems to be an unintentional error in

Yes, that second image was initially hidden on iOS due to the scrolling bug in the site (now fixed). So they spotted what seems to be an unintentional error in a chart in a youtube video, and created a completely different chart with random errors to make a point, while due to their own coding error the (somewhat obtuse) explanation wasn't even visible on mobile devices. Not sure why this was voted to the top of the first page of HN, although I can surmise.