This is what I take from it: by revealing your cards there's less room for manipulation. The buyer already has preconceptions that could range from:
- This will not work; I didn't see this in the screenshots
- I don't understand what I saw and now I have irrelevant questions
If the buyer tells you the pain points, and only the pain points, as a seller you can focus on _those_ and cut out the bullshit. It makes manipulating easier as a seller, and as a buyer you're left to trust the seller that everything will work out in the end.
Haven't got the experience to say whether or not this is a good thing.