You kinda should like nothing I say will persuade you, but here it goes.
A tractor is bought and paid for, so to say. It'll only emit as much as you put into it. Where as with a hover-cab, before you get to theoreticaly use zoro-emission fuel, you first have to make it. I.e. digging up and smelting rare metals, shipping parts all over the world and churning them out in coal-burning factories.
You'll be dead before your tractor catches up the starting costs.
It's an investment opportunity. A futuristic green washed technology with fantastical data that sounds like a great idea to ignorant optimist.
"Personal flight is better that fossil fuels". Nonsense! I guarantee that it is less harmful to drive around in a tractor than to fly around in a "zero-emission" taxi-plane.
This will never take off.
Hurry! Let's build up an industry around this useless luxury and then be confused as to why emissions keep rising even though everyone is frolicing around in zero-emission hover taxies.
It's the third world who is to blame. Damn developing countries. Stop supplying our demands!
Yea. I called it.
You're drinking the coolaid, man.
Anyone who tells you that the answer is to buy their product is lying to you. The answer is to consume less not more.