I think the only one who can benefit from the disclosure is the seller. It's useless for the buyer with one exception. Inspection finds several indicators of previous water in the base - stains on foundation, floor and owner possessions. Yet disclosure says nothing of water problems. Now there's reason for the buyer to doubt the seller's honesty. I have had clients walk from a deal based upon this alone.
Now if the seller was smart he'd include this info on the disclosure. I've seen sellers get out of making repairs because they disclosed the condition up front. But these
occurrences are rare.
How can such disclosures work when the integrity of so many is so low? Very few people that I encounter put any faith in them.