Because he’s fighting the fire with fire, duh. Prospective employers googling his name will now find at least one corrective article from the venue it occurred in.
My guess is he’s taking steps to “fix the internet”. By contacting various new organizations that have published articles on him and asking them to add an update or correction on the story on their news sites.
It’s probably much cheaper than hiring a lawyer to get the record expunged which wouldn’t fix the internet problem anyway.
I wish him well.
Then he is not familiar with the Streisand Effect.