LOL actually not - 27" iMac and a 15" MacBook are my developer machines.
We tested on pretty much every platform and class of device. Goal was to make it the most accessible and usable across all platforms. I think we have achieved that. It is of course different to what was there before, but responsive is the way that the web has gone, and we have to embrace that.
Ummmm.....I'm still using the CERN web browser Nexus so I'm not sure by what you mean by the way the "web has gone". Next, you'll be trying to get me to use Minuet or something fancy.