It’s a valid distinction from a cultural point of view. The Americas covers such a vast portion of the globe, you need a succinct way to narrow down which part of it you are talking about. Kind of the same when you talk about the UK, western Europe, eastern Europe, middle east; it’s all one big area with no clear geographical division.
The only purpose of central America is to pretend that Mexico isn’t in northern America.
It’s a valid distinction from a cultural point of view. The Americas covers such a vast portion of the globe, you need a succinct way to narrow down which part of it you are talking about. Kind of the same when you talk about the UK, western Europe, eastern Europe, middle east; it’s all one big area with no clear geographical division.