Orwell should have added an addendum to his philosophy: You're free to believe in whatever you want, as long as it's not communism. That's not hypocritical per se, but as the Cold War raged on, Orwell's fear of the red menace grew to the extent that he put on his own thought policeman's cap and started reporting suspected commie sympathizers to the British government.
In 1948, Britain decided to form a secret government organization called the Information Research Department (IRD), whose goal was to spread anti-communist propaganda. Orwell not only supported this organization, but agreed to work as an informer for them. A year before he died, Orwell provided the IRD with a list of the names of dozens of writers and researchers whom he thought might be "crypto-communist," basing his judgment on everything from opinions they might have held to whether they were homosexual or Jewish.
He barely managed to dodge the lightning bolt that came out of the sky after typing "insincere person."
In other words, the man who coined the term "Big Brother" was an instrumental part of Britain's own McCarthy-style communist hunt. Although the system that Orwell helped put together wasn't exactly Orwellian (it didn't lead to any arrests or, as far as we know, extended visits to a room without windows), it's nevertheless doubleplus ironic that his anti-propaganda novels were later used as propaganda by the IRD that funded and distributed them across different countries.