Yellow and Blue...
Oil and gas companies, some large corporations and most government departments either have policy or guidelines addressing flight in single engine aircraft.
Why do you care? Or are you just stirring the proverbial sh1t. You are by your own admission a military pilot in Sweden.
And you are wrong---the GOM is full of single engine helicopters. Most government contracted helicopters are also single engine, certainly for DOI, USFS, BLM etc....
You will find that the vast majority of celebrities know what they are flying in---a fair bunch of them own their own aircraft.
Hell man:
Small firms running only single engine ships just want the money and publicity so they probably don't mind.
Not so---I work for one of the "small firms" that does a fair amount of celebrity charters, and we are extremely discrete...due to their privacy concerns, we never disclose who, when, or where we fly. So no publicity there....
Most US helicopter pilots hang out on JH.