I think it will be useful for beginners.As far as I know it is possible to block a person in different (and very easy) ways, so why does it have to be automated?
I don't agree with the blocklist mechanism myself, and my blocklist is empty despite the fact that I almost always fly in open play.
But it pains me to watch newcomers to Deciat, I want to help them and advance further in this great game rather than get completely frustrated with the game.