Witches with no knowledge of what they do make zero sense - class name already suggests that they do. Witchcraft requires a lot of study to master. They must know nature to bend it, to be close with it. They must have intuition. The slavic version of Witch is outright called "Wise and knowledgeable Mother". Even when it comes to demon summoning interpretation, it is still inqludes learning arts and crafts,

Yep, also I know it’s not what you mean by ‘arts and crafts’ but I can now not think of anything other than a young Witch making a Summoning Circle Papercraft or something like that.