First guess: people only think Node.js is a good idea until they try it outside of quick samples. Second guess: JS is the only ecosystem front-end devs general

First guess: people only think Node.js is a good idea until they try it outside of quick samples. Second guess: JS is the only ecosystem front-end devs generally know. Third guess: back-end engineers avoid JS like plague - hence the separation into front- and back-end devs.