idk why people are hating on this for being greenwashing. Jet engines can accept almost any fuel with no physical modifications, so literally any alternative is an improvement no matter how small it is. Even the most penny pinching filthy rich airlines will switch if it means cheaper or more availability having several fuels to run with.

This is on top of the fact that aircraft don't even make up that much in terms of emissions compared to cars, trucks, and even heavy shipping. I think it was something like 8-15%.

Better having at least 0.1% use than no use at all.