Ok, that's fair. Those things should not prevent a song from winning but the artist should not be in the running for artist of the year.

And also, again, the "best" song is so subjective. Maybe a song that a singer wrote themselves, based on their own life experiences, that they have a real emotional connection with, is "better" to me than one that a song writer wrote and the actual performer saw for the first time 5 minutes before it was time to lay it down on the record.