It's not newspeak that causes crimestop. It's that "quiet desperation is the english way", it's the middle class attitudes of the title of "Keep the Aspidistra Flying", etc. that cause crimestop. Orwell was aware of crimestop from his own experiences, and he was aware that he lived in a world with, admittedly, bureaucratese, but without newspeak.
When you think of a concrete object, you think wordlessly, and then, if you want to describe the thing you have been visualising you probably hunt about until you find the exact words that seem to fit it. When you think of something abstract you are more inclined to use words from the start, and unless you make a conscious effort to prevent it, the existing dialect will come rushing in and do the job for you, at the expense of blurring or even changing your meaning.
Along these lines, the basic idea behind Newspeak was to create a language where "the existing dialect" would "do the job for" the Party, by making the expression of desirable thoughts not merely the natural result of lazily-chosen expression, but the automatic result of any admissible expression, by simplifying, not only the language itself, but the underlying body of ideas it was capable of expressing.
[1] https://orwell.ru/library/essays/politics/english/e_polit
I found the link to download an ASCII version of 1984 by reading the readme.txt file, the anchor link seemed broken.
Hope this helps another seeker:
https://orwell.ru/Download/1984/e84_asc.zip
One of the cool things I think about 1984 that occurred to me while re-reading the appendix now as suggested by the article is that in order for Orwell to say something very new about our civilization, or at least to say something old but to many new people, he needed to invent his own language to do it. In a sense there's mirror between what Orwell is doing with his book, in telling our society about itself, and what Ingsoc was doing to Oceania, in limiting thought to goodthink. They both invented a new language in order to relate a new meaning. I like that, and there's something...peculiar about books that invent a lot of new terms. Like LOTR and Harry Potter. There's something "generationally transformative" about such books, maybe. In a sense sci-fi is all-in on this sort of word coining, Matrix, Terminator, Star Trek.
Nineteen Eighty-four is sort of sci-fi. It's set in the future. And then the appendix, is set even further in the future talking in staid and "encycolpaedia"-like tone about the time of the events of the book as if it is in the past. What if Orwell was a time traveler, who wrote 1984 after a visit to a possible future, and was told that by writing this book, that future would not persist. Then on his second trip back to the future he verified he'd changed that timeline by writing his book, and lifted the appendix to 1984 from an encyclopedia on "the rise and fall of English socialism" from the future after the collapse of the political system his book had helped undo. Closed time like curves.
Examine the world of 1984 from Goldstein on out, and it's an excellent example of what might happen if one took Plato's Republic[0] and attempted to practically implement it.
https://news.ycombinator.com/item?id=24069572
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
[0] I'm not sure if the Republic referents are direct, or indirect due to Orwell's second rate boarding school having stanned the greeks.
Certainly I believe that he could chuckle over Animal Farm being eagerly taken up and sold as an anti-communist, rather than an anti-dog-and-pig, book.
https://orwell.ru/
Edited to add direct link to the appendix to Nineteen Eighty-Four, as referenced at the end of the article:
https://orwell.ru/library/novels/1984/english/en_app