The author of the second essay here! It's a pro-nicotine one — the OP just linked to the very end of it. Moreover Gwern himself reviewed my essay during Inkhaven (https://www.inkhaven.blog/), a 30-posts-in-30-days program.
I asked Gwern explicitly if he ever feels responsible for getting some people addicted to nicotine. His answer was something along of the lines of: “No, I explicitly warned people that (1) vaping/smoking is addictive and (2) if you ever was addicted to nicotine, even sublingual nicotine is enough to get people addicted”.
I do think it's important to warn people that they should be careful with the substance and watch their usage, so I included the screenshots in my essay!
He should have reasonably foreseen that that would be the exact effect.
Most normal people reading his piece would come away with the opposite conclusion.
The title alone: "On the benefits and lack of demerits of nicotine (research up to 2015)"
Is enough to make people go 'oh, that's ok then' without investing in trying to understand the subtlety of the argument made. You can add 500 references and spend 30K words but you've already lost by the first line of the article.
It would have taken 10 seconds to put a bit right at the top that says 'do not see this article as an excuse to go smoke or vape' or maybe even something harsher than that. With great power etc ...
All the people who think nicotine is not that bad have clearly not used it long enough, and aren’t addicted enough. There does come a point where it will feel like your bones are trying to escape your body when you dare relinquish from nicotine. Then, it will be clear it is bad.
If there are any doubts nicotine is bad, simply ask nicotine users. And by that I mean, not the people who used Zyn once or twice to study for an exam.
> Given that the only evidentiary standard this author appears to be able to apply is “how much does this agree what what I already believe”
Mainstream medical science along with common sense point to nicotine being addictive and bad for you. I don't really feel the need to interrogate that view, especially when "interrogating" in this context would mean spending dozens of hours of my life going line-by-line through each reference and trying to understand the context of a field which, frankly speaking, neither me nor the author of the article have any business trying to evaluate. The only winning move is not to play.
Gwern's article cites many, many peer reviewed journal articles (aka mainstream medical science) about how nicotine's addictiveness is overblown, and you're citing three tweets.
Common sense points to you being clueless in all of your writing, even though I haven't read it, and I don't really feel the need to interrogate that view.