There is a huge difference between an actual promise and a Bungo promise.
A Bungo promise is purely something that is said to try and appease players after yet another anti-consumer move by Bungo. A Bungo promise is not something Bungo ever expect to come through with, nor should anyone else.
tl/dr - A Bungo promise is more usually spelt "L I E"
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You mean like "we respect the players time and effort in the game." year later, "we're gonna make 95٪ of your weapons completely useless with sunsetting"