I personally don’t agree with any of this. With the majority of these statements I was able to find answer and reasoning. The only one I agree with was the lack of substance with Kyle and the religious neighbors.
Cordelia was outed as the Supreme when Santa Muerte came up on Sarah Paulson’s namecard in the intro. They also completely downplayed her powers all through the season, and so you can be led to believe there has to be more than meets the eye.
The girls didn’t use magic in times of stress, Madison’s attack and Laveau’s, because when under that sort of stress, you are often paralyzed with fear.
Queenie mentioned the lack of black witches when we met her saying she was a descendent of Tituba and it’s very uncommon.
When Fiona was in hell with the Axeman, one can only assume that grief and distress overcame her and using magic wasn’t the first thing to come to mind.
Madison becoming used as a doll seems to be a sort of metaphor for her being an actor controlled by directors, producers, managers, and other forces of that kind.
Lalaurie went back to being racist after feelings of not being herself and being sick of being the maid. She started killing and hating again after her frustrations finally overwhelmed her.
It was stated many times that in times of stress that all the witch’s powers would increase. The last few episodes were obviously high stress with constant risk of death and questions of who was going to lead them next.
Fiona yearned for love in her dying moments as anyone would. She also asked Cordelia to kill her as a final act of selfishness.