[tptacek]

So now we're talking about constricting the flow of candidates down to those who are willing to accept a second job for weeks to mitigate the concerns of future employers.

The problem here is obvious: the best candidates don't ever have to put up with stuff like this. They're actively courted by prospective employers.

Sure, not every candidate can be "one of the best candidates". But why would a rational employer select a screening process that overtly rules those candidates out?