We had a split into frontend and backend lately. The front end was only a little JavaScript on static HTML pages when RoR was trending (btw, does anybody remember Prototype.js?)

Still, it's easier to code a backend in Rails than in Phoenix (done that) or Django (inherited one). Both have extra layers that Rails proved to be unnecessary until the business scales to levels that very few companies reach. And if it doesn't, any MVP in any language can keep running fine for years. We can start debating about tradeoffs and premature optimizations but I don't remember any unicorn to shut down because it started with Rails (or PHP, hi Facebook!) and couldn't cope with the load. It's so much more about marketing and execution than technology.

Elixir is an absolute pleasure. The benefits of Ruby's developer experience with a maintainable, scalable backbone.

Kind of shocked this is getting downvoted. Look, this isn't about X being better than Y, it's simply the fact that there are now a litany of other technologies to grab people's interest. In the aughts, I watched Rails' meteoric rise: it was revolutionary and had few equals. Rails shifted the conversation away from baroque, enterprise-y frameworks towards tools that provided real developer productivity.