Before looking further at the case of France in greater detail, it is worth considering just a few, almost random, points about how the EU is lined up at present.
The Visegrad nations: yep, up to now they like the EU, especially in the case of their un-reconstituted politicians. They recognise the same system of direction given to them as they were all too familiar with when part of the USSR; centralised 5 year plans that never quite seem to work out but, hey, there is always the next 5 year plan to keep us busy and the people don't seem to mind.
Meanwhile the populations have been kept content and relatively quiet with major handouts of largesse from you-know-where.
But, they also know how to rise up and revolt.
Hungary: 1956, short, sharp and brutal.
Checho-lands: 1968, ditto.
Poland: Solidarity for years.
France: keep buying/paying off the farmers via the CAP and all is well with the world.
Wales: ditto.
Germany: is it really possible that Frau Merkel is a reformed communist from the late-lamented DDR? (The DDR never did revolt in the manner of the Visegrad nations).
(one of the Ds in DDR relates to "democracy")