They make them execute a stressful performative action (i.e. the whole groveling process of applying for a job, all over again) which they might very well fail.
You might have some unresolved issues. Applying for a job definitely shouldn't be a "groveling process"
It is also a humiliating and stressful process for professional workers as well, many of which are not social and haven’t established a proper social network to make it more painless. Having to do a dog and pony to prove yourself is excruciating.
I however did not grovel and beg or feel humiliated about getting a job, so I guess never is the correct answer.
This feels very much like this eternal "white-board coding is bad" take which always boils down to the arguer having twisted view of what the point of interviews even are and having mental/socializing issues.
I get around 3 interview offers a month, most of which I instantly turn down since they either won’t tell me how much they would be paying or would be paying less than what I am paid now.
I am expecting a raise of some sort this year, if I don’t get one organically I will just stat taking some of those interview offers.