OK thanks, i understand politicaly correct, we use it in french also (Politiquement corect), i just didn't know the acronyms.
Yes, on the whole, the GW universe has gone more PC, but i just re-read the background parts of the Black tome, and the emperor still eat thousand of souls per days, most of humanity is still almost slaves, and there is a description of the administratum as being a gigantic blind kafkaiesque organisation which is still pretty scary, per example.
I feel that on the overall, the Background is at least a bit less gothic/dark etc, but it depends on the sources. I think the descriptions of the spaces marines in their codex does not represent them as scary fanatical warrior, which they are, for example.
In fact i'm afraid that the very clean mini painting is a big factor, but it's kind of a GW trademark now... An other factor would be the cleanness of the actual game materials; RT was a big book, the maquette was not so good, it was put together in a little random order, Not to speak about some completely anarchic book like Realms of Chaos, etc.
Reading very clean book with neat illustrations, bright photos of very clean minis, excellent maquette, all the same organisation... whatever may be the background stated in text, the impression would still not be as dark as it was in the old days.
Actually, i have the same impression, it's just that having re-read those pages, i felt i had to mention that this background, in the Black tome at least, was actually still quite dark, far more indeed than in the second edition (as i recall it that is). If it's in, then it should be stated... all is not as bad as we may think.
I'm sorry, i'm afraid i don't know the english word for "maquette", but in french it is the layout of text, illustrations and photos on a text page (in a magazine or a book for example).