The DU Lounge

That may be true, but given they were the ones who first came up with the term, I'd say that is their perfect right to do so. If people disagree, then rather than try to change the definition, maybe those people should come up with their own name for a genre of music which fits their definition - then they can decide what gets included and what gets excluded.

As for Yacht Rock, I've thought it was a stupid name and a stupid definition to describe a "genre" of music since I first heard it. But that said, I will always defer to the people who coined the term as to what is included and excluded from the term.