Obviously, it didn't work. The government's lawyers immediately told the Tribunal (as they were obliged to do under their duty of candour to the court); the Tribunal immediately passed this on to claimant's lawyers (ditto); and then it produced an interim report (it being their job to do so), declaring the bill to be "worst, most comprehensive breach of the Treaty/te Tiriti in modern times" which, if passed and not immediately repealed, "could mean the end of the Treaty/te Tiriti" (which is, sadly, the point; this white supremacist government wants to end te Tiriti, and that needs to be said loud and clear so we all know what is at stake).
And now Rimmer has the gall to be upset at the Tribunal for doing its job when he tried to stop it. Because apparently he thought he could rob it of jurisdiction and so prevent criticism of his white supremacist, anti-constitutional policy in secret, without anyone noticing or being allowed to do anything. Which just shows how utterly contemptuous of democratic norms this racist fuckweasel is.
Democratic governments don't try and undermine the foundations of their constitution. And they especially don't try and do it in secret, with a blitzkreig to prevent and limit opposition. That's Trumpist shit, and stuff we should not tolerate in Aotearoa.
Neither should we tolerate Rimmer's bill. Te Tiriti is the foundation of our constitution. While it is not the source of the government's sovereignty (because sovereignty was never ceded), it is one of the key sources of its legitimacy. It meddles with it at its peril. If the government wants to end te Tiriti and the crown-Māori relationship, then I think that many kiwis would rather end them and their illegitimate regime instead.