First, I posted the numbers below, it's not ZIRP overhiring in this case.

But even if it was...I'm struggling to understand how "overhiring" is a bad thing for the actual workers who were overhired.

So too many people got paid massive big tech salaries for the last 5 years. How horrible for them? They were robbed of...the opportunity to be paid half as much money working in a non-tech job?

It's bad for inflation in the economy broadly since it's money not being efficiently allocated, but for these 'overhired' people it was literally a life changing amount of money they're better off having had even if it ends now (with an extremely cushy 6 month severance I should add).