I hope you saw the part where he was retiring at the end of this year?
I don't know if you remember, since time has stopped, but before Omicron, it felt like we had defeated covid. Vaccinated people basically weren't getting sick from it anymore, everything was good - and then everyone got sick.
He probably thought it was safe and over.
Evidence: we're hearing about his rage now, implying there wasn't that rage during the Fall semester.
You're welcome to hate on him all you like, though, it's a free country.