Question re: NAFTA

Hello everyone. I am going to be a RN shortly, looking to relocate from the US to Canada. I was reading this info earlier on the Canada immigration website.:

Does below mean I am only considered temporary in Canada? I thought I could get a permanent working visa under NAFTA? If anyone could pls clarify...thanks!

Where to Apply: NAFTA/CCFTA Professionals may apply for an employment authorization at a Port of Entry (except for citizens for Chile), at a visa office abroad, or from within Canada if the applicant is already in Canada as a visitor.

Duration: The duration of NAFTA/CCFTA Professional status is for an initial period of one year. An unlimited number of one-year extensions may be subsequently obtained, provided that the employment is truly "temporary" in nature