The jurisdiction of the Greek government does not extend to Germany or Slovakia or Estonia. The Greek voters do not have a say in what the governments of those countries must do. The voters of Germany, Slovakia, and Estonia do. That's how democracy works.
(And your voting rights in the EU /can/ actually be suspended, quite legally. There are obligations you have to live up to -- and if you don't, you don't get to have a vote.)
(And your voting rights in the EU /can/ actually be suspended, quite legally. There are obligations you have to live up to -- and if you don't, you don't get to have a vote.)