You are not seeing the big picture, Anon.
"With the emerging studies on determining the pathophysiology of neurodegenerative disorders, the endocannabinoid system (ECS) has drawn a significant attention among researchers due to its potential neuroprotective effects."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7515854/
There is more to cannabis than THC. There's lots of research. Humans are created with an endocannabinoid system.