practical examples of this, if you’re curious, include the Tūtohu Whakatupua (which declared the Whanganui River and tributaries as a legal entity), the agreement around Mount Taranaki (which grants it legal personhood), and the invalidated Lake Erie Bill of Rights (passed by Toledo, OH and was designed to allow residents to bring lawsuits on behalf of Lake Erie to protect it)
Amending the constitution to grant rights to nature is compelling and logical from multiple perspectives, including economic ones. Nature should be regarded as essential infrastructure, the foundation upon which all other facets of society depend.
It would be a fitting testament to the challenges we face.