My comment wasn't saying that THC doesn't have real world benefits, but anecdotal evidence usually isn't a good counter against research. There's a reason research is still done on things that "everyone knows is true."
Take insomnia, for instance. THC might help you go to sleep, but research has shown that it can interfere with REM sleep to lower your overall sleep quality.
But every brain is unique and different substances will affect people differently. There will always be edge cases where people respond to a drug differently than the general population.
In my own anecdotal experience, THC doesn't treat my anxiety and depression, it just makes me ok with being depressed and anxious while they both get worse. It's just a form of escapism.
As an aside, never go off of what an article says about a study. They will often misrepresent the results to further an agenda. This was partially bad in vaping research a decade ago.
All of the articles written about the heavy metal study failed to note that the levels were orders of magnitude lower than what was in cigarettes, were significantly below OSHA levels for people working with them on an industrial scale, and in some cases they were lower than atmospheric levels.