Earlier quoted context omitted.
Quality issues are inevitable if the unions see their role as preventing anyone from getting fired.
Which, it should be noted, is not a common goal among unions. I’m a union metalworker in the US shipbuilding industry— our products are expensive, but in very high demand domestically and internationally. That’s true for various reasons, but in no small part because our quality is exceptional, and people regularly get fired for compromising it. Some unions do seem to strive to protect incompetence at all costs, but n…
There's no fundamental reason that a union should seek to prevent anyone from ever getting fired, anymore than any other business would see to prevent any of their employees from being fired. Likewise, there's no fundamental reason that unions should be bad for the businesses that hire their members. A prosperous client is good for business.
Some unions are badly run and hurt themselves. Americans especially tend to assume all unions are this way, partly because of some high-profile examples, partly because of a culture of individualism and association of unions with communism, and partly because of propaganda. But they definitely do not have to be like that.