Talk:School Daze - Part 2/@comment-30947559-20180224181545/@comment-26423071-20180301214108

Grandpa Guto said the griffons were a noble and brave race until they lost the Idol of Boreas, and the ending of the episode more or less established that Pinkie and Dashie's influence on Griffonstone helped the griffons get over the loss of the Idol and become noble and brave again.

Twilight Sparkle is a Pony who didn't know THAT much about the griffons, while Guto is a griffon himself, and it was implied that he was there when the Idol was lost, so I trust Guto's word more than I trust Twilight's.