Here's my issue with this.

Has ther ever been a documented case where OSA has been linked to a incident.

Fatigue? Yes I'm sure, but was OSA identified as the culprit? If no, then why focus on this? Aren't there more important health issues to tackle?

I could see a focus on cardiac issues or focus on high blood pressure, but it seems someone at the FAA had a pilot with OSA boning his wife.