How so?
And by that, I guess I'm asking...
... because it seemed like an inexorable downward trend?
... because you expected an ebb and flow, but just didn't expect it now?
I feel like people have been trying to reboot the union movement in greater earnest for about a decade with some successes, but an overall consistent outflow. Perhaps they organizing tools were being put in place, but conditions were unfavorable until the tight labor market meant workers were more willing to take risks and Covid work conditions meant workers were less attached to their jobs.
Most "front line" workers I know say they have never been treated so poorly and disliked their jobs so much as in the last two years.