To argue otherwise would be akin to arguing that the UK parliament isn't sovereign because local councils can make some local decisions independently.
EDIT (To reply to the comment below):
If you read the information in the link posted, it's obvious that the important decisions still require unanimity, even if minor decisions (yes, some of them in important fields) now only require QMV.
FWIW, I'm a fan of QMV.
personally I would call employment, business, immigration, social security, criminal law, and half a dozen things listed there as important, but there you go
> If you read the information in the link posted, it's obvious that the important decisions still require unanimity, even if minor decisions (yes, some of them in important fields) now only require QMV.
not true (again)... might be true most of the time, but not always (which is the entire problem)
see the fuss over the past two years where eastern european countries were forced over their explicit objections to accept migrant quotas using QMV
this is not a fact at all, Lisbon removed the veto from nearly every area, see https://en.wikipedia.org/wiki/Voting_in_the_Council_of_the_E...