@Coin Specifically, they say:
For new projects with higher ratings, there’ll be no smoking or e-cigarettes unless it’s essential to the creative vision of the artist or because it’s character-defining (historically or culturally important).
I don't see the big deal. If the smoking is essential to portraying the time period ambiance (e.g. Mad Men) or the specific character (e.g. The Smoking Man in X-Files) then it'll get a pass. If it isn't essential, then taking it out shouldn't be disruptive.
Agree to disagree on how it may potentially affect Russian Doll, then.