Monads are just function chaining worshiped in the holy language of category theory.

You have an array of state, and you can call a method on it that returns a new array of state, that you can call a method on, that returns a new array of state, etc. And that concept of doing state -> function call -> state is the holy Monad.

A JS pleb would write instead:

burrito = (new Tortilla()).addMeat(Chicken).addMissionBurritoIngredients().holdThe(Cheese)

No one would be confused about what was going on, and it would be basically the same thing.