"Paying customers" is a pretty common differentiator. If you're in the land of the free it's pretty easy to get a pilot's license. It's quite a bit harder to get one that allows you to take paying customers... even if the paying customer is your buddy chipping in for gas. There are similarly different rules for the aircraft itself. Many motor vehicles too.
The GGPs view doesn't really have anything to do with that. They're probably okay with it because the people on the sub had more money than they do. Except the kid, but he's tainted by association I guess. None of them were oligarchs.
Stockton Rush's net worth was in the $10-20 million range and he famously dodged regulations rather than trying to wield political power to change them.
Nargeolet was a deep sea researcher whose main asset seems to have been his $1.5 million house.
Harding might have been a billionaire but nobody really knows. The most political things he seems to have done were some space advocacy in the UAE and volunteering a jet from his company to help fly some cheetahs to India.
Dawood's net worth seems to have been between $400-500 million. He did speak at the UN on the International Day of Women and Girls in Science, was a trustee for one of King Charles' charities and was an advocate for mental health and education in Pakistan. Not really oligarch stuff.