A union isn't going to fix a broken company culture, it's just going to get more bargaining power for employees. The union won't change priorities for the executive team to prioritize cyber security, customer-friendly products, and it probably won't change company policy around badging. It might get more WFH, but if the executive team is hell-bent on tracking its users, the union will probably shift focus to better benefits (oh, you want to screw us over more? Pay more!).
So no, I don't think it's worth trying to unionize and fix the company from within. Quit and take all of that institutional knowledge with you to hit them where it counts: the stock price.