This is a good post and reminds of a conversation I had with a family member who works for Toyota, which is staunchly non-union. There is a big debate at Toyota corporate with all the white collar workers there who support manufacturing (finance, accounting, services, etc.) and they are flies on the wall to some of the internal slack channels and internal facebook group discussions.
In order to keep unions at bay, Toyota goes above and beyond in certain things. They are known for never doing layoffs for one. When Covid-19 happened, they kept folks on and when things slowed down, they took that opportunity to clean/maintain presses and machines, re-tool, re-train on kaizen, etc. They keep wages very competitive for their sector, have great insurance and benefits, and retirement. And they do this not out of the kindness of their hearts, but to beat into their employees heads "you can't have all this with a union-- unions will cost you and we can't give you all these great things if you unionize"
Even with all that being said, people are people. Blue collar people can be short-sighted and when they see initial reports of 40%+ wage raises and initial reports of old-school style pensions, they start to think, hey-- I want that!