I wonder if it wasn't a prank or fraudulent post. It seems a little ambitious to have never sailed before yet decide to live aboard and sail in Hawaii.
I doubt it. I think s/he is just a quick learner. Post number 1: "I want to live on a sailboat." Post number 2: "Holy sh*t, sailing is more expensive than I thought."
Most people go years between post number one and post number two.