Entirely possible, but also maybe people who have positive experiences with unions can't be bothered talking about them when the popular narrative of 'unions are bad' means they're inevitably going to have to defend them and explain every bad thing that has ever happened at or adjacent to a union.
I'm a union member, but man do I think twice about ever commenting on anything to do with a union because of the huge negative wave that comes your way.
I for one would like to hear more about the positive experience. The narrative in the US tend to be polarized, and I do wish we can have a civil discussion on the merits and perspectives from both ends.
In my last job, I was a member of a precarious workforce and, during my time at the company, this workforce successfully unionised and won a contract with the employer. This led to guaranteed annual pay increases for members, improved and secure benefits, and a formalised process for dealing with grievances. It really made a huge difference to a lot of people.
We, along with other unions, negotiate a collective agreement with my employer and then do our jobs. The agreement is renegotiated every 3 years or so. If that's the end of it then we're happy. Industrial relations doesn't _have_ to be a fight to the death.