I just thought a bit about the restrictions the GPLv3 allows, and I think I just understood their purpose and effect for the first time (correct me, if I'm wrong :) ).
The GPLv3 allows developers (=copyright holders) to add selected restrictions, like forbidding the use of a certain brand name or similar.
The catch with them is, that any subsequent developer who adds anything is free to simply strip off the restrictions.
The European Copyright directive threatens online communication in Europe.
But thanks to massive shared action earlier this year, the European parliament can still prevent the problems. For each of the articles there are proposals which fix them. The parliamentarians (MEPs) just have to vote for them. And since they are under massive pressure from large media companies, that went as far as defaming those who took action as fake people, the MEPs need to hear your voice to know that your are real.
If you care about the future of the Internet in the EU, please Call your MEPs.