This comment is much more revealing about you than I think you realise, but it's good to know at least that there's no point in wasting time on arguing things on the merits.

I mean I think it's exactly as revealing as I realize, in that I have again explicitly stated that unions are not beneficial to above average workers because they don't need external protections against job loss or substandard working conditions in modern society. To use your terms, they are best off self-insuring against these issues, as is the case with insurance against most forms of loss.

Fearmongering and/or hand wringing about what could get worse in the future doesn't change that reality today.

The big risk to a worker is that they overestimate their skill level, which absolutely does happen, but those people are not in the above average pool I'm talking about in the first place and would in fact benefit from a union.