Workers are not dumb, do not lack agency nor are as influenceable by propaganda as one might think - this a myth perpetuated by the paternalistic left, which has actually served it terribly - and in many cases have freely chosen to ignore or root out these organizations.
People don't notice the propaganda that works on them. Indeed, many go as far as to unknowingly make it part of their identity.
People only notice the propaganda that doesn't work on them.
>paternalistic left
Realistically there is no organized left left - paternalistic or otherwise. There are two competing corporate factions, each as paternalistic as the other.
in the USA unions are pretty shit IMO. Over here in austria, they bargain for ALL workers in that field. And that bargaining sets a minimum per law, which means that no matter if you are union or not, you can still bargain yourself into a better deal.
Are you talking about unions, or companies?