They CLAIM that the all gold stat was a bug and that this is a bug fix.
They do not seem to be aware of this "fix" let alone the "bug" beforehand, there was no indication of foreknowledge anywhere.
It could just be a case of the devs not telling Oasis anything
Or a case of dev/Oasis being too lazy to fix the bug so just claim that it's intended behavior
Or a case of underhanded dev/Oasis tactic at selling too essence, and are lying about the bug/fix thing--If the change came at any other patch, it would not have been so su*ious. But the EXACT same update that introduces tool essence? Well, you can draw your conclusions.

But in any case, no, they would not be changing it back.

Well, you get to pick between keeping one of them or the exp used to level them up, isn't that nice!

Or you can keep what you have. It's questionable whether or not the higher base stat of a new tier of tools, even with extra 2/2 growth per level, is worth switching. After all, between the levels and base stat, you might only gain 30/30-40/40 stat, where as you might lose 20-30 on ALL secondary stat....