In "Why I write" (1946), Orwell states that “Every line of serious work that I have written since 1936 has been written, directly or indirectly, against totalitarianism and for democratic socialism, as I understand it.” Could you mind explaining, if that's the case, how Orwell was disillusioned with socialism, unless you mean the socialists of the PSUC?

EDIT: Found this quora question: https://www.quora.com/What-s-the-full-Orwell-quote-that-is-o... The quote you provided is a summary by a person that is definitely right or at least alt-right leaning, so he is definitely heavily biased. In any case, as you can read in the quoted passage (this time the real thing), Orwell criticizes the "book socialist" or the orthodox marxist, which he already did in Homage to Catalonia. He's criticizing the soviet union's socialism, not the CNT-FAI's one.

Maybe Orwell was just social democrat later on. I read "why I write" and Orwell was for equality and against aristocratic two tier society. It's a stretch to conclude anything further, as he even supported Churchill's war effort.