JFK Jr sold a lot of magazines, not just the ones he produced. He is a subject of fascination to a whole population that needs to be woke up, so the suggestion that he faked his death, doesn't even really matter the answer. (no offense to jjr) If it gets people to start looking at possibilities and at questions they hadn't considered then they might keep that mind open for other things.
Ultimately we'll never know unless someone in the family reveals otherwise, and even if he faked his death then, he could have died later and be dead now.
Personally I can't reconcile that he left his dog alone in the city on a hot summer weekend so I'm in the faked his death camp. As far as I'm concerned the selling point of having a plane is to travel with pet with no hassle.
Furthermore, its possible that even Q doesn't know, because "we have it all" isn't very specific after all.
Lastly, for recurring repeated posts, JFK JR are are way less annoying than joos, toilet porn, etc so why so visceral the reaction is curious.
(pic related, even Friday said MAGA)