All alcohol destroys some part of the liver and the brain. It's not something our bodies were ever meant to ingest, despite how popular it is to do so. One drop of pure alcohol (about the amount in a glass of wine) permanently kills some 10,000 or so brain cells.
But hey if it feels good temporarily, that's all that matters. Drink up!
Alcohol doesn’t actually kill brain cells. It causes short and long term damage to your brain in other ways, as it is a neurotoxin. But the brain cells thing is a myth put forward by puritans because they’re idiots that don’t understand that you don’t have to lie constantly to get your point across.
It does... That's what causes the brain to shrink in alcoholics. Because it's a neurotoxin? You admit it yourself, weird take.
The thing is the "myth" was "debunked" for a while because medical science thought brain cells couldn't be replaced, because they couldn't identify the replacement mechanism. If alcohol just killed brain cells outright brain death would happen pretty quickly compared to cirrhosis.
The problem with that idea is it's just wrong. Modern studies proved that not only can brain cells be replaced, it happens frequently, as part of normal bodily functions.
Of course, because it is normal, casual drinkers don't really need to worry about it, and it's really only a problem if you're regularly getting blackout drunk. Only severe alcoholics are going to actually run into health problems in that regard, and even then their liver is almost guaranteed to fail first.
No one has called you out on the other obviously false claim here - that a glass of wine has one "drop" of pure alcohol.
In the US, a standard glass of wine is 5 fl oz (about 150mL) and 12% alcohol by volume. A "drop" varies but is going to be about 0.05mL (20 drops per mL).
A glass of wine has the equivalent of about 12% x 150mL = 18mL of pure alcohol. That's roughly 360 drops.