This game informer article shares a [url=http://www.gameinformer.com/b/features/archive/2015/08/26/through-the-fire-how-destiny-39-s-first-year-shaped-the-future.aspx]video[/url] in which Bungie explains that many players left the game after reaching level 20 because of the confusing light system and because people's level was at the mercy of RNG. Now they say that TTK was programmed to help invite those players back and want to continue to play Destiny. So in the end Bungie doesn't give a shit about the people who played through CE or PoE, they are just concerned about bringing people back to Destiny. So to answer all of your questions about the controversy, they should have told us as soon as they started developing TTK that they were gearing this game towards casual players not willing to grind.