The reason it didn’t last is because of blog-driven development. How does Udemy make money if everyone is using Rails with CoffeeScript and JQuery? How does Medium drive new articles and new authors? They can’t. So new authors have to drive new trends, which their audience grabs onto and forces into the mainstream.
Recently I had a discussion on here about React vs PHP. The conclusion seemed to be that PHP died for no reason and on second thought it’s more popular now than it’s ever been. That might be a mainstream opinion today but five years ago? How dare you speak against the React/Node hegemony.
Hopefully people come around to the idea that newer is not always better and older tech is sometimes only considered outdated because the trendy blogs don’t talk about those languages/frameworks anymore. JavaScript everywhere isn’t the answer and server side languages/frameworks are often better.
Phoenix LiveView might not win but it’s certainly going to define what the web looks like over the next few years.