The nicotine explanation in the article discussion isn't actually studied, it is just pure speculation (which is fine, mine is as well). But there's no explanat

The nicotine explanation in the article discussion isn't actually studied, it is just pure speculation (which is fine, mine is as well). But there's no explanation why there's fewer smokers even though smokers have more ACE2 receptors. That's table stakes for having a hypothesis on this.