First they replace Scheme with Python for their CS classes, and now SICP in JavaScript! Isn't this another portent from Nostradamus about the coming of the end of the world?
Some things in life just turn into hell when you ask for everyone’s interpretation (politics, government, programming). It’s not fried chicken which most people cant fuck up even if they tried. Stick the damn chicken in the fryer, and whether you over-do it or under-do it, it’ll be fine with some ketchup.
It was designed to be easy for students to implement with relatively easy parsing rules. It is fully functional, but allows mutations. It also has an actually sound type system.