Although I like the idea of having a full-blown graphics engine built into Emacs, I personally don't suffer (at least not so badly) from not having a real web browser inside of Emacs. I can navigate my browsing history¹; I can even (to a certain degree) control my actual browser from Emacs - going through the list of tabs, jumping to a selected tab, extracting content from a tab, inserting the current URL at point, etc. Some of it can be done with AppleScript (on Mac), some of it can be done using Linux tools like xdotool. I browse HN and Reddit in Org-mode; I've recently built a package to search through HN². I don't really need to jump back and forth between my editor and my browser (or many other apps) all the time.

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¹ https://github.com/agzam/browser-hist.el

² https://news.ycombinator.com/item?id=44264368