Many different, independent groups voluntarily decided to support other workers in their fight for fair working conditions against an international megacorp, which is supported by their law. That is to me the literal opposite definition of corruption.
Seems like one anti-Tesla (or EV in general, we can't tell from the article) group is leveraging their network of existing Union pacts and loopholes in the law to withhold license plates from waiting customers.
Are the "independent groups" you're talking about the very connected Unions?