If you mean the boat
https://themarketherald.com.au/magazine/the-pursuit-of-comfo...
https://themarketherald.com.au/magazine/the-pursuit-of-comfo...
Here is an article refuting that twitter rumor back in august of 2019: https://www.businessinsider.com/jeff-bezos-rumors-own-400-mi...
Maybe he is leasing it. Businessinsider does not have access to his personal account and neither does his company.
They couldn't even get Trump's tax returns. They have no clue.