How many athletes report drinking a bit before competing?
The answer is none because it negatively affects all physical ability.
So would you say it’s likely that in aggregate drinking would be healthy?
Edit: Wow, I guess people really don't like to think about this. To respond to both comments below, yes sure, sometimes it helps to relax just a bit and alcohol can help with that, but obviously you could also just drink some tea or actually train yourself to command better control over your state of relaxation. Alcohol is a shortcut that comes with some penalties, but personal ability might overcome those penalties. That doesn't mean that person couldn't have performed even better without drinking.
And regarding lists of athletes that have been known to drink, well of course a counterexample to any absolute statement can be found, I'll grant that. But in the overwhelming majority you won't find top level athletes at the bar the night before the big event and there's a reason for that.