The idea that the frenzy in Salem was caused by ergot of rye was discounted a while ago. They had started building the Haystacks differently and they became damp, hence the theory.
What most historians look at is the “social reaction to symptoms of bewitchment” rather than the cause of the symptoms. The political factions in Salem Village therefore reacted to what was perceived as bewitchment and arguing about the political factions creating the tensions ignores the cause of the symptoms for the reaction.
Some people are just plain evil and few more than religious zealots.They thrive on extreme cruelty.