"We're all pretty sure of that. Where did you dream up this straw man?" is just the kind of provocation that produces that kind of discussion, though.
One thing to keep in mind is that most of us underestimate the provocation in our own posts (let's say by 10x) and overestimate the provocation in others' posts (let's say by another 10x) and that leads to quite a skew in perception [1]. I believe this is why everyone always feels like the other person started it / did worse [2]. Objects in the mirror are closer than they appear! [3]
[1] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
[3] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
I suspect that this drives wages high for highly paid individuals in sport and entertainment.
Note that stars in entertainment, in fields without unions also earn a lot.
I am pretty sure that union is not the most significant part why pay is high here.