Retrospection is always nice and needed and consumption habits definitely need to change. However there is something to be said of someone who single handedly and deliberately pushes the world towards more and more unsustainable consumption habits because they are playing the world like they are playing a game of monopoly. Imagine opening a supermarket chain in a town with local shops and driving others out of business by creating unfair competition with very low prices (by providing goods from countries with lower wages and questionable production standards). Sure you can also blame the local consumers for being selfish and not owning their community but in some cases people actually have to choose between cheaper grocery prices vs other essentials. And now in this case you are comparing someone who is being selfish because it becomes a matter of providing yourself and your kids with basic necessities vs someone who already has billions but is driving even less sustainable consumption practices because it makes them more money. To me it is clear in this case on whom the bigger part of the blame falls to. Educate people and ask them to do retrospection yes but as long as people like billionaires exist, they will actively look for ways to exploit the system. So they should not exist.

Billionaires can only burn so much oil with their private planes and yachts

Everything aside, if someone is personally consuming yearly the fuel equivalent of hundreds of people, I can still call them a much more selfish person even though on a grander scale that particular impact is negligible compared to totality of commercial flights.