Why does the search for one of the ways to treat ceremorphosis cause disapproval among companions who are in favor of treatment, but in a different way?
If you mean Lae'zel, it's because she is a Githyanki, a race of interplanar warriors that considers itself superior to other races due to their vast collected knowledge and specializes in exterminating the mindflayers (ghaiks). Due to her studies she knows her people have a way to purify ceremorphosis, although she is quite secretive about it. So she sees any attempt at a cure other than her own as a waste of time and effort but most of all as mistrust against her and her knowledge.
If you mean Shadowheart with Auntie Ethel scenario, it's because she is being careful and does not think you should be sharing your condition with every single backstreet healer you come across. It's reckless and potentially dangerous.
