The Pukana chant the New Zealand team performs at the beginning may be cultural and trying to intimidate your opponent. Watching the Canadian team standing there I could only assume that must have fired them up as they owned them.
The women's Canadian Rugby team has indeed improved significantly on the world stage, especially following their appearance in the Olympic final.
Coach Kevin Rouet (French native) has been credited with bringing a unique style of playing. Canada renewed its contract until 2027, but after that, we need to be ready to lose this rugby genius to another country, such as France or England.