Yep! The same thing like with the pipeline. Pacta sunt servanda. We Germans simply do not whine that much about how Schroeder and Chirac sold our interests in Nizza. But it was you who started to talk about democracy.
But no country accepted that the EU can interfere to their elections or chose which party should be a part of coalition.
Imagine that there would be such nationalistic and populistic parties like in Poland in the current German coalition in Berlin (very funny). Imagine they would have the same attitudes to you like "your" coalition partners have to us. Be sure: You Poles would boil in patriotic anger and scream about weird nazism or something else...
accepted by their politicians, not by the peoples.