Disciple is already a card you can get for free. (Technically all 3 are if you count Ranked tickets.)
The vast majority of the complaints are towards the large number of cards here that can be obtained in other ways, especially from Gate duelists. Yes, a card like Evilswarm Salamandra or Windrose isn't an issue. But you could get something like Darkflare Dragon or Ra's Disciple, which is dumb.