I agree that the viewport-based rendering makes a lot of sense if you assume that all web sites are not designed for your device. Arguably, it even makes sense as the default behaviour.
My objection is only that if you have a team who are actually willing to go the extra mile and provide a customised UI that plays to each device's specific strengths, it's absurdly difficult for them to get it right.
CSS media queries actually aren't bad for this sort of work in either design or device support these days, give or take some absurdities involving scrollbars. All I want is for all those juicy features to actually tell me about real pixels. Then I can fix my font sizes and icon spacings and graphic dimensions to look pixel-perfect and still remain accessible and draw at a similar physical size on all devices.
My objection is only that if you have a team who are actually willing to go the extra mile and provide a customised UI that plays to each device's specific strengths, it's absurdly difficult for them to get it right.
CSS media queries actually aren't bad for this sort of work in either design or device support these days, give or take some absurdities involving scrollbars. All I want is for all those juicy features to actually tell me about real pixels. Then I can fix my font sizes and icon spacings and graphic dimensions to look pixel-perfect and still remain accessible and draw at a similar physical size on all devices.