The cores shouldn't have ever been part of the infusion. All Bungie has done since the infusion has been changed is creating an illusion most fell for. Hey, we added more ways to acquire them but pay no attention to the trade-off that didn't improve anything. Why don't some people pay attention to the game they play? Just because Bungie added more ways to acquire them, raising the cost to Masterwork or anything else did not benefit this game one bit. Now they're doing the same thing removing the chance to get bright dust by dismantling items you collect from Tess. I guess some people don't mind being toyed with and easily fooled that things are "improving".