So the source for your quote is
https://insideevs.com/news/693890/tesla-sweden-employees-ref...
Some kind of American EV trade magazine. I can tell you that the quote
is 100% bullshit and the only reason the employees wanted to "remain
anonymous" is because the writer made them up. Swedish unions have
exactly zero leverage on employees and the idea that someone would be
afraid of repercussions from a union is so preposterous that it is
laughable.
What the union is trying to do is to get Tesla to sign an agreement not to pay auto workers less than what other car manufacturers pay. If Tesla can't agree to that, when everyone else can, shame on them.