> It's worth asking why workers felt insecurity when the statistics suggested there shouldn't be any.
Probably because they aren't saving enough to be able to weather bad times, because a serious medical issue may ruin them, because no matter how much you save, housing, college, and medical costs will grow in tandem, and because despite official unemployment being low, most employers aren't willing to compromise on worker-hostile policies. [1]
The answer to your puzzle may be that employers have become a lot better at bargaining, lobbying, and union suppression than they were a few decades ago. It may also be the case that the government has become better at maintaining a high enough level of unemployment (through monetary policy) to prevent workers from gaining too much in a boom economy.
[1] Any of the tech folks on HN try asking to not be subjected to an open office hell, prior to this COVID thing? How great of a bargaining position did the software-engineer shortage give you in that conversation?