Bungie's reasoning is total BS.
"They were very weak enemies that didn't drop very good loot". WRONG All the enemies have (or had at the time) the same percentage chance to drop an engram. What you got from engrams was 100% determined by the Cryptarch, and he didn't care where the engram was looted from.
"So you actually will get less loot [shooting into the loot cave] per hour than you would just playing the game." WRONG The loot cave was so good because it was 6 (if I remember correctly?) very weak enemies every 5 seconds, repeat forever. That's 72 mobs per minute or 4320 per hour. Where else can you get that volume of easy mobs per hour, consistently, AND with little to no risk of dying? THAT'S why it was so good.
Those new reasonings by Bungie are insulting. Just be honest and tell us it was too easy to sit back and do nothing to earn your engrams for the RNG game. I have no problem with them nerfing it, but don't make up some BS story about why you did it to make it sound like it was for the "dumb players who don't know the faster way to get good loot".
Edit: just read the rest of the article. I love this quote: "Hopson mentioned that Bungie didn't expect the random drops to be as big of a deal as they ended up being. What they were expecting was for players to simply buy better gear, and to have random drops act as the cherry on top, so to speak. Instead, players have latched onto the RNG, and it's affecting their perception of the game."
Haha seriously? This game has so many layers of RNG stacked on top of itself, how could they not anticipate it? They were touting this as an MMO shooter, sort of, and what is 99% of an MMO? Killing the big bad guys, while chasing their random loot drops. If they just expected us to focus on buying the vendor gear, what longevity did they expect from this game? With a few days playtime you can take even a new player on a fresh character to maxed vanguard gear.
Head scratching comments for sure.