The ones that “overplay” ARE serving the song. Just not the way some people think it should be served.
Some people act like “serving the song” is some objective measure that we all agree on. It’s actually just some people trying to add weight to their opinion with some meaningless new age claptrap. IMHO anyway.
Besides, if we're being honest, we don't serve the song, the song serves us. If you play to make money, you're using the song as a vehicle to make money. If you are making music, you're using the song as a vehicle to express yourself. If you're really lucky, you're doing both at the same time. Either way the song is serving you.