Haven't read the novels but
Maybe they like KQ, and wanted to make something good out of the books?
Lambonius is being satirical and sarcastic, he is joking, he is not being completely serious. He is involved with making a game based on one of the novels! So he is in fact poking fun at himself!
Ya, the novels are actually better than "sucks balls", and Lambonius is not really a 'real idiot'!
They are actually fairly entertaining... From a story stand point they are degrees better than the majority of the KQ games, as far as character development, and use of the English language... Perhaps this is actually a weakness (because one of the charms of KQ is its simplicity)
But Shakespeare, Sir Thomas Malory, Milton, C.S. Lewis or Tolkien they are not!
But ya, but neither are most (or all) of the King's Quest games themselves...
Anyone who thinks King's Quest can compare to those and other literary classics are pretty much deluding themselves.
But despite simplistic stories, what KQ has going for it was its sense of exploration, whimsy, and colorful characters. Of course, the 'interactivity'. Like I said KQ simplicity is one of its charms.