Strange to hear that some of those fired workers complained about higher wages in other auto companies - if they are so good, why not apply there?
The actions of the UAW over the past 50 years have indeed increased wages, but at the cost of the number of UAW jobs. Google the decline. A bad balance. They need to increase the base, and cap the top so that all workers can afford the products of the union few. That is why there is a used car market. Tesla is going to upend the traditional car market.
Get Musk angry and he will build a plant in a right to work state and close Fremont if he gets strangled by high wages, and more importantly the union work rules.