[kjdndisneinj]

It's a ton of work to start a union, one that can and has absolutely cost people their jobs, both historically and recently. It seems unlikely that it's just "lefty political signalling". Perhaps you can point to specific reasons why you think this is the case?

Furthermore, articles published on this topic indicate that their motivations included well-established and reasonable on-call hours, slightly more vacation days, and more collaborative decision making with management. All of those are real, tangible benefits that most of us would value and enjoy.