We're making six figures here. Want more pay? Sit on your butt and do leetcode or practice interviews and network with other rich programmers. Move to a tropical island and work remote. Heck, you don't even need to go to college and just about anything you want to learn is a $9.99 class away or free on in video format.
Not every worker can or wants to work for a FAANG, whether because of skill, time available to study, logistics like location, moral reasons, or anything else. We all deserve good working conditions now and in the future.
Tech workers are absolutely spoiled compared to most other laborers. We also have higher leverage and thus a better chance at unionization compared to many others. Others having it worse should not prevent us from raising our own conditions, and actually helps improve conditions of other classes of laborers by making it more likely they'll unionize themselves or causing employers to improve conditions as a preventative measure.
When I want 'better', I work for it and get it myself, not by schmoozing the union bosses to get on their good side or paying union fees for 20 years to build up tenure.
If you are vastly more productive than coworkers in the same title band and wish to capture more of that surplus value, you should look to change employers, found a company, or become an independent consultant. Those are the available options with or without unions.
I think most of these tech-unions are ideologically motivated and have no interest in actually improving working conditions.
Do you feel like you already make a lot of money, and you don't need more? If so, there are two actions you could take. You tell me which results in greater good in the world:
1. Don't push or struggle for better pay. Be happy with what you have, and let upper management and stockholder dividends soak up the extra. I'm sure they'll spend it making the world a better place.
2. Organize, push, and struggle to improve your pay. Since you're already happy with the pay level you get, donate all surplus to the charity of your choice. Put your niece through college. Save some of it, then retire earlier and spend more time with your family.
Turns out there are other countries outside of the US. And even in US not all developers are overpaid.
Moreover, software developers are much much more likely to drop out of their career before pension and/or face burnout than other fields.