A tad unfair. There is no deliberate attempt to mislead or slack checking of facts. It's just that there hasn't been an updated guide since the car par was closed
I think that mine was the last site guide to be published (in 2005) when the car park and picnic site were open. These things happen, and as an author, there is nothing you can do until the next edition comes out.
Similarly, I gave a set of instructions for getting to Craigellachie in Aviemore that started off at the tourist office. As soon as the book was published, the tourist office moved half way up the High Street...
Sorry if you don't like it but that's the way these things go. If I ever get round to writing an updated edition, rest assured that the entry will be corrected.
Gordon Hamlett (author of the Best Birdwatching Sites in the Scottish Highlands)