To the conservative mindset, silence is usually equated with consent. And the WT hierarchy's silence on "Happy" speaks volumes.
K99, you are right, not everything has an agenda. Still, PR is what it is. The "Happy@Bethel" song is a convenient piece of "unofficial" PR.
Yet they are trying to keep the lid on it, get it pulled off YT. I don't quite understand how it would have got to the point of being put up without Bethel hierarchy's silence (and I agree implication of tacit approval) but then why and get it dropped as quickly as it appeared?