Not long ago I had to write some JS (had to, not wanted to) to do something on a site, and got something working based on what I knew, only to be derided by a "real JS developer" that my code was "deprecated", "not following best practices", "not modern", etc.

He gave me his version which was around 10x more code and only worked in a subset of the latest browsers, while mine not only did but would probably work in everything since maybe IE5 or so...

Maybe that's considered a bug, but I don't want any of this trend-chasing. I write code to get things done. My users don't care, and they want to get things done too.