This is not a fashion show, or "my framework is leaner and executes faster than yours" competition. "Rails is old and busted; Node.js is the new hotness." Seriously? is this the mentality we should adhere to? What happened to the problem solving, or building stuff? Old is bad, eh? If that is our credo we should quit javascript altogether because it is oldness itself!

Please don't get me wrong but I see a problem here. The attitude is quite problematic. You choose a programming language based on what do you want to achieve, and how that language helps you to achieve, not on buzzwords. If I want to build a weblog application, I won't try to learn c++ for example. Not because "it is old and bloaty and requires a peripheral knowledge", it won't help me to solve my problem. And I wonder, what kind of programming language does not require peripheral knowledge?

I can go on and on about how hard is it to do such a shift in a corporate environment and maturity of a codebase is good, and code is not a thing that rusts but I think I made my point.

tl;dr: you choose programming languages based on what you want to do and how that language makes your job easier; not because it is new or old or bloaty or "lean".