I'm forced to agree, having ridden much of the route myself, I don't really recognise much of the interpretation of things with the exception of Stornoway which I may have caught in a bad light but I was grateful I was only there on an overnight stay.Unusual opinion, most people love the hebrides and the west coast.
I would consider going to London just to get the sleeper train though and it's given me a yearning to go back and finish the bottom half of the OH which I didn't do.