I would say that many people in the Commission are indeed very idealistic, especially those working on climate or environmental policy. But I would not say many have an EA mindset, in the sense that they would choose which cause area or even policy topic to work on in a scope sensitive way (how many deaths/emissisions/suffering can be avoided).
I think the difference in impact between different policy topics can easily be 100x even within the same cause area. And to me it seems that people—also the idealistic ones—often don’t seem very focused on this, as long as they work in a role where they can make some positive contribution e.g. to fighting climate change.
Interesting idea—there is not a lot of effort in this direction (though there was just an ‘introductory’ EA summit last weekend in Brussels, not targeted at EU officials), and generally low awareness of or exposure to EA thinking.
Overall, I’m not sure how feasible it really is to convince people of EA thinking to the extent that they would base their future career decisions and choice of policy area on EA considerations. Some of us have spoken to friends in the commission about EA and while many are quite open and curious, none of them have really changed their policy area based on EA principles.