> which would be in the 2010-2013 era (peak Webkit was 2012), which I personally regard as one of the most interest times to be both on the web and be a web developer

Oh man, it depends on your definition of interesting. That was the time we had 3-5 engineers at reddit, and let me tell you, making reddit work for all the browsers was awful (and I barely had anything to do with it, it mostly fell on the other guys). It got to the point where every reddit page had "Fuck ie6" as a comment somewhere in the html, because a bunch of people were still using it and it didn't support a lot of the stuff the other browsers did.

While the consolidation of browsers isn't great from a market perspective, it's been great for developers sanity. :)