"Every herb has certain benefits... until you overuse it. Then it has the opposite effects."

Makes no sense at all. That is just something that somebody pulled out of their butt. It is true sometimes, and completely wrong other times. In other words, as a general rule, it's wrong and should be ignored.

Your experience is your experience, but that doesn't validate nonsensical illogical statements like "cannabinoids are beneficial but then suddenly become harmful".

facepalm