Currently playing a Sorc and opened the Necromancy of Thay. I used my Sorc options to expose the book and calm the magic, but didn't learn any spells from it. When having the artifact conversation with Gale, he says I already have an artifact he can use. The Necromancy of Thay is the only artifact I have but it isn't an option to give to him. So either calming the magic makes it useless to Gale and the dialogue incorrectly triggered or it is still useful to him and is missing as an option to give.
