[namuol]

> knowledge of semantic HTML, CSS, the differences of various browsers, accessibility, progressive enhancement, network performance, interface design and user testing

Sorry, but developers from 2012 didn’t have proficiency in most of these skills any more back then than they do today. I would argue frameworks introduced a lot of welcome debate and discussion of these things and actually helped disseminate these skills far beyond the “old guard”, not to mention the pressure put on browsers to normalize behavior and the huge improvements to the JS language born out of the induced demand of the huge rise of web apps that were all but unmaintainable in the before-times. Obviating the need to know about browser quirksmodes is a good thing and we have frameworks, in part, to thank for that.