These are really good points.This can be a huge political rabbit hole, but I will offer these thoughts:
Undoubtedly there are people who found it easier to accept the "handouts" for the "free money" value vs finding work (either old job or a new one). But I don't think there are millions in this category. And the folks who do take that easy money might not be the best skilled workforce anyway - I assume the vast majority of jobs at PRS involve some level of skill, either through training or experience, and some combo of inherent talent. Or maybe I'm naïve.
I also suspect some people found that after losing their jobs (and maybe not even getting much in the way of handouts) that their quality of life didn't change, or perhaps improved, overall - the expenses and time associated with working were replaced by not having to spend on daycare, transportation, etc, combined with maybe they experienced an increase in general happiness level. Especially easy to transition if they have a working spouse.
And thirdly, I suspect some people decided to retire a bit early. So they just never re-entered the workforce.
And as a result, with fewer people in the available workforce, there is less desire to accept a lower-quality job. A minor glut in a workforce suppresses hourly rates easily ("Oh, you don't want to do that job for $8/hr? That's OK, I can find someone else hungrier."), whereas a minor drought in a workforce means many people have the opportunity to look around for something better, and because there aren't as many candidates, employers will pay more to attract and keep "talent". And turnover is an expensive hidden cost, so a smart employer includes that in their cost of keeping an employee at a higher salary vs replacement talent at a lower salary (you hope).
So, for example: If PRS pays what would normally be a competitive ("livable", "fair", whatever term you like) wage for the skilled labor they employ, then the should be able to maintain a stable workforce - but only if there is a suitably available local workforce. If Telsa starts building guitars in Texas and pays triple the normal salary, there might be a huge migration of the workforce from MD to TX, draining MD of a skilled workforce in building guitars. So even if PRS doubles their normal "reasonable" wage they might not be able to attract enough qualified personnel. Overpaying under-skilled workers generates problems for everyone (even the employee, who can feel frustrated at not being able to perform).
My aim in my post (above) isn't at all political. I think until the topic is seriously studied down the road, we can only guess at whatever the motivating factors have been.
One thing I didn't mention in my post is the extent to which problems in foreign companies that supply parts, raw materials and labor for subassemblies have been affected.
One small example among many: One of the industries in Ukraine and Russia that has been greatly affected by the war is the production of automotive wiring looms that were previously supplied to automakers all over the world.