Yes, he has a perfectly valid point about the Eurovision song contest results being all about the politics, and very little to do with the actual quality of the song and performance on the night. However, his threat to quit gets trotted out each year (check the BBC news archives, or do a little googling for confirmation).
Also, his quote that Eurovision is no longer a song contest makes it sound like he believes it has been until very recently. This is utter rubbish – the scores one country will give a neighbour or fellow political follower have been so predictable for years. Was the UK’s Andy Abraham’s performance a contest-winner? Probably not… Was it far better than some of the tat offered up by other nations? Definitely…