But I agree about the scrolling. Even on an ipad, which I think is the standard device these days, the scrolling is broken at times. Sometimes I swipe up and a new page scrolls in. Ok. Sometimes I swipe up and some content scrolls in from the side. Ok. But sometimes I swipe up and nothing happens. Thats a bit confusing.
I would want to see some statistics there. A quick google search yields the following article from last year, which states that the PC is still the majority ahead of any type of mobile device, let alone the ipad as a subset of mobile devices.
http://marketingland.com/report-nearly-40-percent-of-interne...
However, when I want to look at a website to see how the designer planned it, I always grasp my ipad and look at it.
Because even if he planned it for Chrome on the desktop (which accounts for 50% on that website) I dont know the OS, the resolution, if he thoguht about a keyboard, a mousewheel, a mouse grasping the scroolbar or the trackpad of a notebook having a scroll area.
But yeah, the world of devices is pretty fragmented. Looking at an ipad doesn't mean too much.