Amusingly, I think this phrase illustrates your point. To the best of my knowledge, a native speaker (which I'm not) would always say "The whole book is (in?) English", leaving off articles seems to be very common for Slavic people (since I believe you don't really have them in your languages).
Whenever I come across text that has a lot of missing articles, the voice inside my head automatically changes to a Russian accent; and in the instances where I've bothered to find out the author, it was always someone from Russia or some other ex-USSR country, so it seems I've already ingrained this characteristic at a subconscious level.
And if what it does now is unimpressive, it might be a good thing to use to monitor the rapid progress of LLMs.