

When was the last time it read the book? The entire point of Newspeak was to shape how people thought, and it worked like gangbusters.
To meet the ideological requirements of Ingsoc (English Socialism) in Oceania, the Party created Newspeak, a controlled language of simplified grammar and restricted vocabulary designed to prevent people from being able to think critically. The Newspeak language thus limits the person’s ability to articulate and communicate abstract concepts, such as personal identity, self-expression, and free will,[1][2]
https://en.wikipedia.org/wiki/Newspeak
You can’t grasp the concept of personal identity, let alone internalize it and actually have one, if the concept for it doesn’t exist in the language.
Orwell could not be more clear about this stuff. To the point where my teenage (before witnessing it first hand in the US) self found those parts to be boring and far fetched. Boy was I wrong.
From the book:
the lexicologist character Syme discusses his editorial work on the latest edition of the Newspeak Dictionary:
By 2050—earlier, probably—all real knowledge of Oldspeak will have disappeared. The whole literature of the past will have been destroyed. Chaucer, Shakespeare, Milton, Byron—they’ll exist only in Newspeak versions, not merely changed into something different, but actually contradictory of what they used to be. Even the literature of The Party will change. Even the slogans will change. How could you have a slogan like Freedom is Slavery when the concept of freedom has been abolished? The whole climate of thought will be different. In fact, there will be no thought, as we understand it now. Orthodoxy means not thinking—not needing to think. Orthodoxy is unconsciousness.[1]



I mean you can think what you want, or even write a dissertation about it and have it published. But what I’m saying is established fact among people who dedicate their lives to this.
https://www.researchgate.net/publication/379404191_The_Semiotics_of_Newspeak_Language_Power_and_Thought_Control_in_Orwell’s_1984
https://journal.ijarms.org/index.php/ijarms/article/view/757
https://www.academia.edu/721095/Orwell_and_the_Power_of_Language
And here’s Orwell himself defending his use of language as a means of control in the novel:
https://www.orwellfoundation.com/the-orwell-foundation/orwell/essays-and-other-works/politics-and-the-english-language/
This last one is actually really interesting, I recommend reading the entire thing.