Re: You don't have a right to a "more equitable, sustainable, and diverse workplace".
"There is no law that states every employer must have his employees represented by a union "
True, but there is a "right to assemble", yet companies seem to think they can override this by doing everything in their power to stop the formation or joining of unions. Isn't "freedom" part of the constitution? If a majority of staff choose to join a union, and do so outside of "work", using no "work" resources, holding meetings away from "work" premises, why does do you think the employer has a right to even object, let alone actively discourage it even by legal means, let alone the illegal means referred to in the article?
Of course, for the employer, it's a "problem" because, even an unrecognised union has resources and can offer legal advice and resources to those employees who are members and provide support in employer/employee grievance procedures. Legal help which an individual might not be able to afford or even be aware of.
(I freely admit that not all unions are "nice", some have taken their power to the extreme with "closed shop" environments that can be just as toxic as employers hiring "union busters")