Right-to-work is about ending free association, it's odd to paint unions as anti-free association. In an ordinary market environment a widget company could set up an exclusive supply deal with a plastic company where plastic is supplied at a set rate under certain agreements and we'd all be fine with that. But if we switch out "plastic" for "labor" and "plastic company" for "labor union" then suddenly we outlaw it. The idea that you think government should interfere in the contractual dealings of labor-supply in our market but not commodity-supply describes the hypocrisy.