While Samantha could live in Darrin’s world, Darrin could not live in Samantha’s world. Note how every person with magic abused him for their own amusement.
I think he got his references wrong. Endora (more than Samantha’s other relatives) loathed Darrin and habitually tortured and abused him while Samantha stood back with an “Oh Mother”. Imagine that with a gender switch and tell me how it looks. Some of her other relatives were more accepting like her cousin and uncle
Lemont has nothing to apologize for. Susan was in the wrong for insisting on holding him to standards which she does not have for herself (when it is inconvenient).
A special call out to one of the better known cartoonist of my youth