I don’t think anyone just randomly donates a kidney, like you would give blood

You would be wrong about that, in 2021 more than 450 people in the US anonymously donated a kidney to a non-familiy member (source). This is the scenario I'm asking about. One of the arguments given is that just as we allow monetary donations to specific groups of people, why not organs.

The question here is about a voluntary kidney donation from a living patient.

I hadn't thought of it before but it's obvious, hydrogen is a gas at room temperature, it had to be stored under pressure in order to get any significant mass into the volume of a tank. So it's under pressure in the refueling station and in the car's tank. How does it get from one to the other without boiling away?

Nobody knew your scenario before you explained it in detail.

I thought that "altruistic organ donor" was a well understood concept, I was wrong.

It is simply not happening.

You're factually wrong on that aspect.

Because Israel already occupies Gaza and other Palestinian areas.

Israel withdrew from Gaza in 2005, where the hell are you getting your information?

Are you sure Germany doesn't have an altruistic kidney donation program?

This document from 2016 agrees with this assertion (bottom of second page).

It seems such a waste, this podcast makes it sound an amazing idea https://freakonomics.com/podcast/make-me-a-match-update/