It's the same reason I don't like this style of function:

    .map(var => var.toUpperCase())

    .map((var) => {
        return var.toUpperCase();
    })

I've asked many people to re-write perfectly functioning code for this same reason. "Yes, I know you can do it all in 1 line but let's create variables for each step so the code is self-documenting".

This is a solution that people fixed 25 years ago with detailedReturnObjectNames.