If that is true, there would be hundreds of thousands of people in mental institutions.  You cherry pick info to suit your narrative.  You fail to look at the actual real evidence from real people, that has years and years of experience with the plant.  

I know several people who manage their mental issues with cannabis and the result for them and their families have been much better than their prescription drugs.  I am not saying one cannot have an episode while high on THC, but the overwhelming large majority of users have no problem with the plant.

You live in an echo chamber where you will fail to acknowledge you have been lied to for most of your life about just about everything.  Unless you have first hand experience about the topic, you only have an opinion, and cannot speak from a position of understanding or knowledge.