Don’t think so. All that bunch is just scared because the guy feels strong enough to engage with the Greek nation while they are too weak to do the same. By the way add to the search Switzerland had had a great democratic life for decades using referendums and while some other countries manage to associate every community and all interests to the decisions making process and compromise, not a common practice within the eurozone, there can’t be any problem to see Greece’s democratic traditions take the lead to organize a referendum.