Nefcy & Co.'s mediocre writing finally caught up to them till they dug themselves into a hole with major changes (removing Jackie, "killing off" Toffee so easily, etc.) that would forever ruin what little promise the show had.
SvtFoE's comedy has always been inconsistent yet generally bad, but as it went on, its lore and rules of magic that make no sense just ruined it further.
I think >>103503966
elaborated on this better than I have any interest in doing.