See this is another thing that has to be changed in the public perception before biometrics become viable for widespread usage- they're useful for some things b

See this is another thing that has to be changed in the public perception before biometrics become viable for widespread usage- they're useful for some things but not others, for exactly the reasons you lay out here. They're not a be all end all and immediately solve all problems of both identity AND access management, and they need to be applied judiciously and only when they actually solve a problem.