It's very funny laughing at them but the alternative for most people would likely have been not attending because they wouldn't be bothered to make the trip by

It's very funny laughing at them but the alternative for most people would likely have been not attending because they wouldn't be bothered to make the trip by other means (I know I probably wouldn't unless I had a direct flight). I very much doubt the environmental impact that a return private jet flight is greater than whatever these people might implement towards helping the environment. Effectively anything other than biking or hiking there would be enough grounds for pointing and screaming "HYPOCRITES!".