Labour, the Corbyn flavour, or whatever comes after, cannot win the 'blame the forrins/EU' ploy as it is wrapped up by Nationalists, (from the bnp through the kippers straight into Tory policy), so it needs another way of framing the value and justness of a redistributive tax policy.
I don't think semantics really matters.
The narrative has gone so far towards it's a forrins / the EU's fault, it doesn't really matter.