Yes, it's fundamentally unfair to those interviewees who don't cheat. And the process is broken. However, the conclusion this person reaches - we must conduct these broken interviews in person so the cheaters can't cheat - is the wrong one. Look at it from the point of view of the hiring company now, not the interviewer. They got a person who was good enough (based on the merits of their actual work, not interview pe…
Isn't there an alternative interpretation, that the internal evaluation process is just as broken as the hiring process?
The interview process is probably calibrated more like a rationing system than a ranking system. They'd have too many capable hires applying for each job.