This use of freedom is much older than the 20th century. Already from the middle of the 19th century, socialists and others were arguing that freedom is contingent on the means to exercise them, and so that there is no true absence of coercion unless resources are distributed in such a way as to give people actual choice, not just legal choice.

I find it downright comical that you call this Orwellian, given that George Orwell was a lifetime socialist.