none of the above. I'm more upset at mack for posting it online. While not a douche move you can't let haters know you care that much. If people wasn't spamming his entire online presence before they definitely would pile on after that. Blood in the water.
Everybody knew that GKMC was the better album. Everybody knew Kendrick got robbed. For him to make that text public (w/o a response btw) seems like a calculated way to keep the focus on him and away from Kendrick. So he wants to keep the award while also getting a cookie for acknowledging that he doesn't deserve it. That's gross.