I grew up in Flint, MI and my father was an electrical engineer at one of the 3 major automakers. We would frequently go to the auto plants for school field trips. I remember one particular trip where we were walking around the production floor and there was a guy just sitting in a chair sleeping right in the middle of everything. Nobody seemed to think it was a good idea to wake him up. Everyone just worked around him like he wasn't there. It was kind of surreal.
I'm not saying that proves the point in your quote above, but the unions were notorious for making it impossible to fire employees even if they showed up drunk or high or didn't do their jobs. They also didn't seem to be protecting workers interests very well, as their wages have stagnated for decades and they've lost the great benefits they used to have. It doesn't mean unions are a bad idea, but the auto unions seemed to be a particularly bad implementation.
I grew up in a suburb of Detroit at a time when the auto industry was contracting. What I recall was that senior assembly line workers (my neighbors) were working 60 hour weeks and pulling down overtime pay, while junior workers were getting laid off.
Naturally, unemployed people had no union representation at all, and this was a perfect opportunity for politicians to start stoking anti-union resentment amongst the working class, which persists today.
Meanwhile as I recall in one of the European countries, perhaps Germany, the unions negotiated with the government and agreed to a 4 day work week, in order to keep a larger number of workers employed. As reported in the US, this became fodder for "those lazy Europeans and their 4 day work weeks."
In the US, the car companies reacted by pulling the plug on entire factories and moving them to anti-union states.