Somebody needs to sort this issue out. On a recent transatlantic flight the CC simply closed "my" shade. No announcement had been made and the CC member didn't say a word, simply reached across and closed it. I'm ashamed to say I simply opened the shade again, very quickly, and gave the CC member a (polite) mouthful. The incident spoiled the rest of the flight.
Like many passengers I choose window seats so I can look out. If the airlines don't want me to do that and require that I should close the blind (for whatever reason) they need to make it clear in their advertising, terms and conditions and on board announcements. The current anarchy is not acceptable and I for one will contribute to it by continuing to open a blind next to my seat when I want to unless I am asked politely not to. A polite request will result in my closing the blind and then opening it a crack occasionally to enjoy the view.
At the moment I can't help feeling that because I don't see a consistent pattern of closed vs open blinds implemented by crews the "policy" is implemented at the crew level and is unofficial. I have to say that makes me suspect that there is an element of the crews trying to control the passengers which I don't like. Am I wrong?