In the 70’s the biggest worry climate scientists had was the impending ice age. I know cos I was there.I agree a hair shirt approach won't work. Like I said, it isn't about reduction in energy use, it's about moving our source of energy from fossil fuels to renewable and nuclear energy. There is more than enough renewable and nuclear energy to run and grow our societies. The potential cost of not doing so is too great and the other benefits (energy independence and less local pollution) make it worthwhile even without global warming.
The private jet argument is because we haven't got any sort of carbon pricing for consumers. Governments have been told for decades global warming will be a problem but none have acted in a significant way... probably due to the power and money of the petrochemical companies. If a carbon tax was introduced then yes you'd expect private jets to cost a lot more. I don't know whether outright banning would be used. Global warming is very much a scale and long term problem and while frustrating, tackling the consumption of a few won't move the needle.
As I said previously, the alarmism isn't technically warranted but the scientific world has tried rational explanation of the facts since the 1970s and no-one has done anything. Human nature is to not worry too much about future problems and so the rhetoric is ramped up. Something like the IPCC reports is far less alarmist and sober (and is influenced but countries who want to damp down action)... But if you read those you will see they are just as conclusive and definite that global warming is the problem over the 100 years and we must start action today.