Someone less convinced about these issues will react to this by saying: „good idea, make those who are interested in this climate thing pay and leave the rest of us alone“.
Hopefully this is a more palatable solution for skeptics than a big carbon tax or even doing nothing. There is an obvious connection between cars and airplanes spewing gunk into the air, you don't need to make a case with global warming models - just be responsible for your own mess and nothing more. Everyone understands pollution and being responsible for their direct actions.
I would argue being vegan is a very hard change, equivalent in my mind to asking people who care about the environment to never fly or get in a car with an internal combustion engine. Those people exist, but man is that a lot to ask!
It is a much smaller ask to opt into paying 5 cents more for a burger to offset. But with travel the connection to emissions is more obvious and wealthy people have a larger share (a rich person doesn't eat 10x more steak than average, but does fly 10x more).
You lost me on the comparison between never flying/driving and eating responsibly and well, but i think the "never" part of the equation is going to cause a lot of friction.
If being a vegan is hard, use condiments! Don't be a vegan, just eat way less meat (especially red) and stuff made with palm oil which would both benefit both the climate and your health. Actually the heck with the planet, heart disease will take your number faster than climate change.
"By 2020, 90% of Ford’s North American sales will consist of larger vehicles with lower fuel economy" Not buying an SUV that never leaves the pavement which rides on GIANT tires might also be something to consider in the personal choices category. If you really need to see above everyone else, install a periscope.