I can't stand Tesla/Musk but I would not be happy if this happened in my country. If state workers could simply refuse to deliver your mail, renew your drivers license, or let you into the airport because of a political reasons, it would no better than a dictatorship where the government itself did those things to suppress political enemies. You would have no ability to carry on your normal life or business.
Could the poll workers refuse to accepts ballots for a candidate they have a "labor action" against?