> It is just a poor choice of resource allocation
Well, not always. And sometimes many stone-cold, rational people flash money. Just to improve business.
A friend of mine was perfectly happy with his shit of a car even though he could afford something much better.
Then he started a business. A business that involved communicating and meeting with people very outside of our tech or liberal/vegan/minimalist/generic-dominant-fad bubbles.
These people cared about the car he drove. They did not want to be seen or meeeting or seen with someone with a shitty car or using a cab. Perception mattered, and business was hurt.
Then, that friend bought a BMW just to drive it to meetings. He also keeps his old car and drives for personal use.
There might be some people, important to Bezos's business that care about where they meet with him. Bezos wants it to be a yatch.
Can't blame him without more information.
He might be a money-flashing, wealth-displaying rich asshole. But I am willing to give him the benefit of the doubt.