The "lessons" have nothing to do with flying or with decision-making! I would not presume to pass judgement on a very experienced pilot like Dave Olesen.
The lessons are: File a flight plan or itinerary. Have a "bail-out" bag handy. Carry some survival items on you (matches at least). Wear your lifejacket. Be prepared to swim (nobody is coming along on a Sea-Doo to pick you up). Be properly dressed. Wait on-site for the cavalry to arrive (because they will if you did item #1).
None of those are lessons(in my opinion). Those are all standard stuff that everybody either knows or should know. I want to know what will prevent the same from happening to me so I won't need to apple the post-crash lessons.
Was this just a case of waves too big, a freak wave that can happen, improper control input, wrong technique(with correct technique described). You obviously were not there so I don't expect you to answer those questions but they are the type of questions that should be answered so the other stuff you mentioned is not required.
While both are important, my preference is for the preventing an accident lessons.