Sure, it can be expressed as a golden parachute by someone who is deeply confused by what a golden parachute is.
A golden parachute is a payment to get someone or of the company. It's a way for a company to part with someone without drama, lawsuits, etcetera. And sure, it could also be corruption.
It is not accumulated pensions over 35 years. Obviously. In a "black is not white" kind of way.
I have no particular knowledge of this dude. Maybe he was awful. Maybe he did as well as anyone could have in the circumstances. More likely, somewhere in the middle.
But his pension from more than there decades ago is not a golden parachute, and nobody would ever sign a contract with a three decade claw-back. This guy's total compensation does not sound terribly high by the standards of CEOs of this size organization.