How? The yacht is built from the same common materials used to build other yachts and ships. As far as maintenance, people will be employed to maintain it. As far as traveling with the yacht, it's a sailboat with backup engines that run on diesel fuel, the most commonly used energy source on Earth. How did a rape occur?
This isn’t a native canoe carved from a local tree and moved around by a paddle, it is a massive building on the ocean that will use massive amounts of energy and resources both when not being used and when being used, and in constant maintenance to keep it shiny and new on salt water.
Bezos is a radical environmentalist, would you want to pay the energy bill for his yacht as it sits in the dock, or any other of the bills of vast consumption that this yacht and its people will devour?