It’s a simple point. He had a choice. He could have said No.
Whether it made “no sense” to refuse, you don’t know that. Why do you say that? Based on what?
Maybe it was a tough choice for him. Who knows. For a lot of folks, when to retire is not obvious or “easy.” You don’t know the details. He accepted, as did other umpires. That’s what we know. Everybody who accepted probably weighed somewhat different factors
The point is that be had a choice. You initially said “not by choice.” If you don’t believe that anymore, you’re on the right track.