Did the report provide a transcript of the CVR?
I agree about a balanced concern both from the geese problem and the crew actions. I don't measure this as much by discussion in the report as I do by the recommendations flowing from the report.
A mention was made of high vibration. It sure would have been with that many blades missing and still running at 45% I would look to the CVR and debrief of the crew to tell me what capability they had to determine the usefulness of the other engine. They may have felt that they had a dual failure.
OK in hindsight they made some wrong choices, but it was successful, so let's go slowly about judging what would be appropriate remidial action.