[happyguy43]

Nowhere is it implied that people going through rough patches will be judged for poor performance and “booted out the door.” The point is that people should be setting expectations ahead of time and will be held accountable for the expectations they set.

There is ample room in a high-performing workplace for the rare rough patch, just needs to be done in a way that optimally allows the team to minimize the disruption.

The main condition is that rare rough patches should be rare. Obviously people who constantly go through rough patches can not be expected to perform highly and are not appropriate employees in a high performing work environment.