With the aid of modern medicine, the rate of cancer deaths is 158.3 per 100k per year: https://www.cancer.gov/about-cancer/understanding/statistics
Compared to that, witchcraft executions had a negligible impact on number of mouths to feed. Sources:
European population in year 1500: 90M - https://en.wikipedia.org/wiki/Medieval_demography#Demographi...
Executed for witchcraft in 1450-1750: 50k (upper estimate) - https://en.wikipedia.org/wiki/Witch-hunt
"When considering the question “What caused the Salem witch trials,” it is important to remember there is a danger in seeking the elusive, singular, all-encompassing explanation."
IMO a big part of it is likely the desire to 'explain'/'rationalize' misfortunes in some way, that suggests a 'solution'.
[0]: https://salemwitchmuseum.com/2023/05/17/debunking-the-moldy-...