I mean I understand that this is for a closed beta and that access has to be limited. However, that the luck element has to be paired with grind is what irks me. Personally, I don't see how you can ensure quality in a beta when you select the participants through luck and willingness to grind limited content. That has entirely nothing to do with being an active player and having a broad and open-minded view of the game.
It's easier for ANet to get positive feedback that doesn't challenge their ideas and makes them feel good about themselves by recruiting people that embrace the current model so much that they're willing to grind themselves against it.