I don't know anything about Max Devries, nor Buddy Larson and it really is off topic here to discuss their cases.
This is a forum and possibilities are permitted to be discussed. I have provided the link regarding the statement the fisherman in the boat gave to LE as reported by MSM. The report is a fact, it exists in the form of a video which was reported by ABC. It is permitted to discuss it here just was it was presented to us. Mr. Silva is the only person we heard state they left but other witnesses were reported by LE to have stated the same thing. Believe it, or don't believe it, but there is no proof to date that these witness statement were not given to LE, only that we have not seen them. It standard procedures not to release witness statements to the media and I am surprised LE let GMA view them. GMA claims to have seen them and they are reporting it as a fact.
Again, the fisherman's report is linked above.
This is the only comment I can find after searching that I made about the case you mention bolded above:
"Could LE have declared him dead and not missing because they had to rescue the man? The man's story does not sound right to me. Who goes out that far with a jet ski. You're suppose to stay close to the coastline. If you are out too long they go after you. It's not as if they unintentionally wandered off. Something is just not right with this man's story. jmo"
I do not know anything about this case other than what was provided in the links. How my statement above evolves into your comments I don't know???? But comments to me personally need to stop. jmo