I quite agree that we should work as hard as possible to discourage this notion that women need to be protected from society, or society needs to be protected from women, expressed symbolically through items of clothing that literally cut them off from sight of the world. Absolutely it's sad to see.
But it's not -- absolutely not -- a matter for state law. The burkini anyway isn't the offending item (that would be niqabs, for example, or proper burkas), so a law imposing a ban on them is already unjustified as the wrong target. But quite apart from that, you cannot restore freedom of choice by removing freedom of choice. That is what this ban was trying to do. It would have failed by definition. Good riddance to it.