I got out of school in 2013 and then went to a job that was pretty self isolated, working in proprietary format that wasn't really aware of the rest of industry - at best there was some Python and some .Net work. I took another position a couple of years ago where I got throw into the deep end of the modern material - ASP.NET Core, Node, NPM, React, Typescript, modern ES, the whole kit and kaboodle. I can tell you it took me a loooonnng time to get it all figured out. A lot has changed in the latter half of this decade.