A referendum is require because it’s inserting an amendment into our Constitution to recognise our country’s original inhabitants and provide for them to have the ear of government (Coca Cola and lots of foreign corporations have much more influence than the Voice is ever likely to).
NZ did this long ago, but went much further, setting aside special seats in Parliament for Indig.
Did that caused the NZ sky to fall?
Like everything in the Constitution, the wording is brief and concise. Read it and you’ll see.