

Does that mean as a US citizen I get to decide EU laws?
No, not how petitions work in the EU. Nominally it means they can force the EU parliament to bring underway legislation concering the topic, albeit there isn’t really a control mechanism for this. But say they do it anyways lest they lose even more credibility, considering games despite having existed for at least 50 years at this point are foreign objects to basically everyone that is the leftovers in the EU Parliament Ubisoft or whatever is gonna send two lobbyists and it ends up at at some sort of EU law that says “under reasonable circumstances video games should have to be playable after the copyright holder abandons service except if it costs them any money”
Cause it’s nominal and “bring underway legislation” is a catch all term. Petitions to democratic parliaments are bullshit, why would any of them care about - as you point out - a single issue thaat 0,22% of the population signed up for?
They might have to have it as a point of order for the next meeting, in which they all decide “nah, no legislation needed, shit’s fine” and be done with it. That’s how most petitions go, anyways. You cannot force a law into existence by petitions.