I admit, I really like cannabis, and when I was a 20 year old occasionally smoking with friends at parties it was a "healthier" alternative to getting wasted on alcohol. Share few joins with friends, have fun, laugh a lot.
Then as I got financially independent and I started solo consumption (mostly to get rid of stress) I really started appreciating the cons: lack of energy, disruption of sleep, negative impact of my cognitive abilities, increase in anxiety. I'm glad the study confirms those to be statistically common.
I was very lucky to have a SO who really disliked me smoking and made me realize that I was just doing it to "not think", and it had really 0 positive effects on me. I'm sure I would've quitted eventually anyway, but support and criticism sped up the reality check.
Eventually this is all anecdotal experience, and I'm sure there might be occasional users who can have a mostly positive experience, but the fact that a review points out how statistically common are the negatives and how uncommon are the positives honestly reflects what I've seen on myself and friends.