You could look at it another way, if a seller chose to not mention a gaping big hole in the rear cross member, would that still be an honest description?
Ignorance may be an excuse, but only to a point.
I went to look at an 81 range rover with a M&D diesel engine the other week. It was a poor description so I emailed the seller and asked him the general condition, he said it was 'fair'
I travelled 40 miles and it was a shed. Parts of the interior missing, rear tailgate held shut by rope, holes in the inner wing that apparently didn't matter because they weren't structural, and generally battered bodywork.
I'd expressed my displeasure with the seller arguing that if I sold him a fair condition sofa with cat **** stains on it, and bits of the cushions held on by gaffa tape he'd tell me I was wasting his time and being dishonest. I then drove home.