That was big on the news here (a few weeks ago) as the singer is from here. The airline has offered to make changes so that this does not happen again for anyone (shouldn't have happened the first time), and he has been offered 2 custom guitars since. The guitar maker himself was impressed with the amount of publicity this video has made.
That was one very effective way to lodge a complaint.
Also, this is probably the best use of country/folk music: write an easily understandable protest song.
btw, offering him new (albeit custom) guitars probably does not make up the loss if the guitar had personal history attached to it.