Maps vs Objects in ES6, When to use?

Question

Ref: MDN Maps

Use maps over objects when keys are unknown until run time, and when all keys are the same type and all values are the same type.

Answer 1

Use maps over objects when keys are unknown until run time, and when all keys are the same type and all values are the same type.

I have no idea why someone would write something so obviously wrong. I have to say, people are finding more and more wrong and/or questionable content on MDN these days.

Nothing in that sentence is correct. The main reason to use maps is when you want object-valued keys. The idea that the values should be the same type is absurd--although they might be, of course. The idea that one shouldn't use objects when keys are unknown until run time is equally absurd.