While not the grandparent post, I can add some of my own experiences with unions:
Once, when workers in Chicago supported a general strike in support of an eight-hour workday, police shot and killed a number of workers. [1]. Someone threw dynamite into a crowd. A lot of people died, but we got that eight hour workday.
Another time, workers protested for higher wages, but the company owners hired private security and killed a hundred workers. The army was called in, and private planes hired by the company dropped bombs on the workers [2].
And who can forget the time the richest man on Earth hired private security as strikebreakers after a collective bargaining agreement failed? [3]? Interestingly, these workers were already part of a union, but the owner unilaterally withdrew recognition of the union. A few people died (private security...), and the collective bargaining agreement ultimately failed.
I suggest you make yourself aware of the trials unions have been through over the past two hundred years. Capital will always repress labor by any means necessary, and parroting the lines given to you by capital is implicit support. This makes you a de facto class traitor. United Bootlickers isn't a union, and even if they were, the benefits wouldn't be that great.
[1] https://en.wikipedia.org/wiki/Haymarket_affair
[2] https://en.wikipedia.org/wiki/Battle_of_Blair_Mountain
[3] https://en.wikipedia.org/wiki/Homestead_strike