The main problem with this, as many players say, is that it's not those folks who need the weapons. Why give the best weapons to the people who are already winning at PvP. That argument doesn't really hold water (because the whole point of the game is to reward the best players with the best stuff), and the fact is that this change won't really affect that many people anyway-- as of each new arena season, the last seasons' weapons will have the requirements removed and be available for arena points only. So if all you want to do is the minimum number of arena matches and save up your points, you can still do that-- you just can't get the latest and greatest.
Blizzard's said before that they want arena PvP to be the peak of player-versus-player combat skill (or at least know-how), and a change like this makes it clear that they don't want to give out any free rides to the top.