Why were you unwilling to lean into the process? You could have said: these OKRs have to describe my actual work... here are my attempts to document what that

Why were you unwilling to lean into the process? You could have said: these OKRs have to describe my actual work... here are my attempts to document what that means, and what to look for if I do a good job at that. If they had pushed back on that, I think you would have a leg to stand on, but as described it sounds like you were just unwilling to engage.