Well the prototypal inheritance stuff is newish for Java people, so I can see a desire for class based, and then there is that closure private variable thing w

Well the prototypal inheritance stuff is newish for Java people, so I can see a desire for class based, and then there is that closure private variable thing when it is nicer to just have a private keyword. (I think they use let now?) Still adding features can make things to become bloated. I think one of the targets of language design is balancing everything. I'm not an expert though.