Sure; but you’ll need to learn all those other features if you want to read other people’s code.
I was adamantly against Javascript adding OO-style classes and public/private methods and stuff for that reason. More stuff in the language makes it strictly harder to learn. Even if I don’t want to use those language features myself, I will inevitably end up reading and debugging other people’s code which does use those features. So I still need to learn it all, even if I don’t ever see myself using that stuff.
