Some developers at my workplace are very resistant to change ("why learn ES6 when ES5 works fine" is a classic line we used to get). Trying to move onto a modul

Some developers at my workplace are very resistant to change ("why learn ES6 when ES5 works fine" is a classic line we used to get). Trying to move onto a module based CSS approach (whether thats CSS modules, CSS-in-JS etc), and literally one of them went "but you can handle that with namespaces, why not just do that". Don't understand why people will willingly do far more work, with more risk, and more prone to error and bugs, than "learn" (using that liberally given how trivial it is to pick up) a modern approach that solves problems for you, so you can get back to making features, rather than dealing with quirks of older approaches.