That’s more an assumption. Some fields over that time have seen a sharp increase in wages.
Another thought on unions is that it doesn’t look at qualitative differences between US and E.U. unions. For example US unions tend to protect drunk members from punishment. EU unions don’t (at least not on the same scale as the US). Did unions decline due to power struggles or because they were worthless and workers though they’d fair better on their own. All the article says is “here’s a graph” and “trust me”.
Another thought on unions is that it doesn’t look at qualitative differences between US and E.U. unions. For example US unions tend to protect drunk members from punishment. EU unions don’t (at least not on the same scale as the US). Did unions decline due to power struggles or because they were worthless and workers though they’d fair better on their own. All the article says is “here’s a graph” and “trust me”.