Initially for me Elm felt like a toy language that serious folks should ignore in favor of PureScript and similar. But then after reading code for various Elm applications I realized that I can grasp how things work just by reading the description of the state. Code was just filling details that can be ignored on the first reading. This does not happen with other functional languages when the code ended up passing various important bits of the state in lambdas of callbacks making understanding of the whole much harder.