I think it is a bid problematic that anybody can create an account on github and open issues there (if enabled).
No "professional", paid software would allow ordinary users to communicate directly with the programmer. Or allow outsiders to post comments on their products website.
Just moving discussions to irc would already filter a lot of spam. As a last resort you could require some kind of proof that you are a maintainer of a bigger distribution. Or something in between.
First of all, of course one country should be able to influence other countries in the EU. That's the whole point of the EU.
Secondly, the waste products of nuclear reactors are much more problematic than CO2.
Handling of this waste is often overlooked when looking at the costs or CO2 footprint.
And that does not even touch the associated risks.
A blind focus on the concentration of wealth will only improve tech if it helps profit, will only improve lifes if it helps profit, will only protect the environment if it helps profit, will only influence politics to increase profits. It will try to create poverty because that eases exploitation. As you already hinted, the motivation has to change.
I think shooting yourself in the foot is something you would do to avoid drafting. It makes me sad that this may become relevant again in Europe. It certainly is in Ukraine and Russia. : (
As a toy project I put a raspi with a small screen in my living room that would show the temperature and humidity for the last three days as a graph. It was somewhat of an eye catcher in the living room. The data was always interesting. Even if the humidity did not change much, at the very least you could always see that it was colder during the nights, which told me it was working.
It taught me so many things.
The effect of opening the windows short vs. long on temperature and humidity.
That the sun shining into my room was way more effective then my heating.
How the temperature goes down exponentially when my heating turns off, and how the length of the of/off cycles depend on the temperature outside. Etc.
Surely a wealth tax is not worth mentioning.