If only it was legal, I'd happily replace my alcohol use with cannabis, and I don't think I'm alone in my age group. Not a big surprise that that yields improved brain health.
Apart from that a better medication would be Ketamine which is also a NMDA receptor antagonist like alcohol but not as destructive to every cell in the body. Except your bladder.
Obviously the effects of different substances for different individuals can vary profoundly, and alcohol for me is far superior in almost every way imaginable.
Which sucks, because the long-term and next-day side effects of cannabis seem so much less bad.
Anyway, it's legal where I live, I avoided it for a long time because of reasons but it tends to give similar relaxing / depresant effects to alcohol, minus the downsides.
I'm confident Big Alcohol is pushing hard against legalizing and developing cannabis. As is the government, because alcohol is heavily taxed and therefore a big source of income.
That said, when I walked through the main street of my city after dark, I thought replacing all the drunks with stoned would have been a major improvement.