There are many who are/were perfectly happy with the EEC as a body that oversaw economic integration among it's member states. It's role as one which largely governed trade is acceptable to people that don't want to be aligned to a more federalised or a politically unified Europe.
There is, with good reason, a concern that a more centralised Europe, as a capitalist entity, with an ideology of 'European Nationalism' accompanied by the means to enforce that, through a centralised armed forces, bears all the hallmarks of a Facist state.
There is well documented philosophical commentary on the structures and ideology of Totalitarianism, the likes of Gramsci, Lefort, Arendt, Schmitt (offering a range of perspectives) and there are factions/individuals within the EU that want or at least aspire to move in a direction which could be considered or are persceptively, less liberal. Nazism and Facism have courted, particularly in the decades following WWII, the idea of a Nation of Europe and with greater centralised control it's easier to achieve.
Personally, I don't prescribe to that train of thought, as I tend to believe that the EU seeks to limit and reduce Facist elements where they emerge and it largely promotes/favours liberalism through it's legal processes and judgements. But I recognise the concern.
