Not everyone reads Beta announcements for their live servers. I'm pretty sure a huge majority of live world players don't read this forum either. So announcing that it's difficult, half impossible or very easy to get something, anywhere apart from in the game, or with the original event announcement, is going to reach a limited number of people. And they will get disillusioned about how it went because they had no idea. It's a bit like announcing you can get this massively great building through normal game play, it's possible as long as you just play the event, and then tell (or rather show) people that in fact what they can get is fragments of that building if they are lucky and have to play more than they perhaps anticipated to get the last ones.