This idea presumes a few things: 1. Tech workers are burning out due to 'extra load' because of staffing issues at companies. 2. The staffing and workload issues are due to tech workers being voluntarily unemployed.

The first is probably very true. But tech companies have always ran as bare thin of a crew that they could to meet output requirements, which is why you can find content on tech burnout all the way back to the dotcom era and probably before.

The second is, in my mind, untenable. The kinds of salaries that a tech worker makes is wildly different from the amount that unemployment covers. In my state unemployment would barely be half of my salary, and thats with the added covid benefits. I strongly, strongly doubt there is even a small fraction of people willing to take that kind of paycut in exchange for pure idling.