Chat Control Must Be Stopped – Now

I find it somewhat disturbing that this sort of thing is not considered a career killer for politicians.

Almost nothing is. Local politicians fail upwards to the EU (at least in Germany) or some private job, if they fail at all. Most of the time, you can do what you want, and the voters don’t care.

"and the voters don’t care."

Then why did so many vote extremist anti EU? There just has been EU election in germany and the nationalist gained a lot. And none of the big parties otherwise said a clear no to that, so what could I do, except vote a small party against that, but too small to really do something?

Voters care. But they see often no point in voting anymore.

That's precisely the thing. Whenever EU does something people don't like, they hate EU, not the council members who voted for it.

Because it is exactly the EU governance that lacks democratic representation, enabling unfavoured politicians to remain in significant power. You can only elect MEPs (via party lists) locally. The majority of legalislation is drafted by the technocratic European Commission and legislation is mostly passed through parlaiment unchanged from there.

There are many nationally disgraced politicians seating in the EP, EC or council. Only the ones in the EP were electible.

The people have correctly identified that a massive supranational unaccountable government is the problem, enabling corrupt people to keep ruling which undermines the core functioning of representative democracy.

In this specific case I believe that it's the EU Council that pushes for the current iteration of the law, which is formed of the head of states for each EU member.

So, even if they might not be explicitly elected to be in the EU governance, most of them have reached that spot through more or less democratic means. "More or less" because Prime Ministers are usually nominated not elected, but that's still as part of each country's democratic process.