I had an opposite experience. OKRs were a complete waste of time. I was required to waste hours trying to come up with OKRs, none if which had anything to do with what my actual day to day work entailed. The OKRs were then promptly ignored so I could got back to getting shit done. At the end of the ORK term of course they'd been ignored. This had the effect of being demotivating because I was being asked to make up these OKRs "because at this company we have OKRs" but then having zero time and zero motivation to pursue them since there were people waiting for my real work to be finished.

I think discussing this requires getting clear on what OKRs are. At the company I was at they were broad personal goals set every 3, 6 or 12 months related generally to your career at the company. They were not related to any specific project or deadline.

An example might be "Do more public speaking". Where as generally I'd speak if the opportunity came up but I wouldn't seek out opportunities and AFAIK the OKR didn't make me seek more out. It was just something I wrote to get management to sign off that I had written some OKRs.