GPT is way better at next-word predictions than n-grams. However, I agree with OP that the resulting compression scheme is probably not very practical all things considered.
Oh yes, thank you for saying that. We seem to be the only ones here that don't like this. I have a 2K screen, please let me see more content, not less on it.
You could use a static website generator such as Jekyll or Hugo. Then, if the tools stop working for any reason, you always have the generated HTML than you can update.