My understanding is that the card descriptions are Stephanie's not Barbara's, because the deck is Stephanie's. I really don't get why this is such a "big deal".
Personally I think that the parts authored by Barbara were very well written. Shadowscapes, as with any deck, may well be the first experience that anyone has of Tarot and IMO it takes some skill to write something that leads a beginner in gently while still being an interesting read to a more experienced user.
If you don't like it and/ or don't "need" it, then you don't have to read it. Or, for that matter, even buy it in the first place. I think I have learnt something from all of Barbara's books, but then I tend to read things with that objective in mind - even if what I learn is that I don't agree.