Do 'actual libertarians' get to control who gets to call themselves a libertarian? Michigan politicians that like to label themselves as libertarian supported

Do 'actual libertarians' get to control who gets to call themselves a libertarian? Michigan politicians that like to label themselves as libertarian supported socializing the cost of vehicle accidents. Of course repealing an insurance mandate is pro 'personal freedom' on the surface, but in context of reality, all it does is transfer costs from a user fee to Medicaid, which is not libertarian at all.