As a long time player (and long time poster) if they don't double bronzium acquisition rates along with the change, this is a definite step backwards for anyone who has been playing the game for any significant amount of time.
Unless CG's message is "Happy Anniversary! You're being punished!", I think they need to rethink this change - or at least delay it's implementation until they have actually figured out AND corrected the bronzium "technical issue". And no, vague promise to "explore increasing this rate in a future update" doesn't do anything. We heard that about Teebo's stealth bug, uneneding loyalty bug, disappearing buttons, etc. Figure out how to make it work before releasing it - otherwise you're just making the gear crunch worse for veteran (i.e. loyal) players.