"insulting people along the way" - Just like the 1990s TV show of a grumpy old man Victor Meldrew which was well received as TV comedy entertainment.
"free time" yes he is 72 and by state rules retired long ago. And he is on this long trip when he knows what it is like to be swimming in the ocean 75 miles from the coast in the Caribbean, with his Cub sinking, when he was around 63 or 64 years old.
Controversial? Yes. But fascinating and riveting for many. If others wish to help why try and stop them?