...I'm less sure of this.
If Windows Defender was deleting any file named "Animal Farm.txt", that would be a form of censorship, right? It's preventing the transmission of a piece of political literature.
Now, what if it was deleting "Animal Farm - The Video Game.exe"?
Now, what if it was deleting the keygen for "Animal Farm - The Video Game"? What if the activation server for that game had gone offline, and this keygen was now the only way to play it?
My point being, software (and especially games) can absolutely be a way of expressing ideas, and if you block the software, that seems like censorship to me. I also think that some forms of censorship are fine and even necessary—I don't particularly like stumbling across porn unprepared—but it should be optional.