They are! And I do too. Sir Gawain and the Green Knight is one of my favourite Arthurian stories. Though my all-time favourite has to be Perceval. I love both the unfinished version by Chrétien de Troyes and the German translation/adaptation by Wolfram von Eschenbach. In all other Arthurian stories the knights are always super competent, so I think it's very fun to have this story about a knight who's still learning and makes every possible mistake along the way.