Why not just say no
An interesting point. And a correct one. Unions reflect the interests of active members. Active members are usually those who subscribe to the collectivist mentality of a union and who have little understanding of or time for individualists. In my experience, as a person who became a union steward in order to try to get the union responsive to the membership, I can safely state that it's a waste of time and life can be quite interesting in a union shop when you've been labelled "anti-union".
For the most part those who have no interest in joining are not likely to get involved. But they can be forced to join (majority rule) and then if they say anything negative they're given trite statements like "get involved". The best bet for those people is get involved when the union is organizing and defeat it.
