As long as the web is a viable software distribution platform, the world will need "webdevs". 2019 is still a chaotic time for the platform, and winners and losers still haven't really shaken out, not even at a basic architectural level. There are profound questions about what computation gets done where, what side-effects happen where, which in turn influences everything about how software is built, tested, distributed, and run, and yet they aren't really answered so much as philosophized about.