27% of greenhouse gas emissions are from transportation, to which 11% of the transportation emissions come from planes.
Overall, that works out to be 2.97% of all the emissions that come straight from airplanes. There's a huge difference between 2.97% and 50%.
Yes every bit of emission do count but I'd be much more concerned with the electric power right now.
https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emissions
https://transportgeography.org/contents/chapter4/transportation-and-environment/greenhouse-gas-emissions-transportation/
And with US billionaires, 43% are Republicans, 24% are Democrats and 33% are independents.
Once again, there is a huge difference between 87.4% and 24%.
https://www.forbes.com/sites/chasewithorn/2020/10/20/even-americas-billionaires-are-tilting-toward-biden-in-the-2020-presidential-race/?sh=2b47aa0d2bb7