'Objective' opinion on Strictly Come Dancing

There was a brilliant letter in yesterday's Metro newspaper regarding the recent John Sergeant / Strictly Come Dancing fiasco. I say brilliant, because it ended:

And before anyone comments, I don't watch the show so my opinion is objective – neither am I a dance purist.

Objective? That's like saying your opinion on a novel is objective because you've never read it, or your opinion on a political party is objective because you don't know what its policies are.