It is difficult for all the players to shoot consistent in the 50's. If you took all the restarts and quit games into account it wouldn't be that low.
Howvever the multiple qualifying helps the lessor player more than the good player. The really good players can play 5 rounds and put up a score good enouth to make the tournament. For the middle level players, it might take 25 rounds to put up something that gets you in. Limiting the efforts will end up moving up the cut line but also making even more of the elite players in the field.
If you don't want to play in this tournament, don't. It's free so it costs you nothing.