Like I said. Mainly because if someone lights up, they'll smoke the whole cigarette. Not half. But if they didn't get enough nicotine from one, instead of not smoking again for a couple hours, they may smoke again after just 45 minutes or so. Or even start chain smoking.
Do you know how quitting an addiction works? Ideally... you take less.
That's not a paradox or a gotcha. It's the only way people break the cycle. You understand that cycle can be deepened. You seem absolutely confident there's no other direction.
You seem to think the people having low nicotine cigarettes forced on them want to quit smoking.
And no. I'm not saying there is no other direction. Upping the age every year would work. Upping the prices would work, but is a ln asshole move for a government to make, banning cigarettes would work. Lowering nicotine in cigarettes is what wouldn't work. It's straight up something that would make the smoking related health issues of an entire country worse instead of better.
We're not talking about what they want. An outright ban is an option, here. The goal is to make them smoke less. To make them less addicted. Lowering how much nicotine they get, without changing their habits, would probably help immensely.
Though half at once is the wrong curve. You'd want to drop by 10% a year. Enough to grumble about... not to double how many you smoke in a day.
"Upping the age every year" is an asshole move of the highest order: inequality. You'd tell some people, this is legal, but never for you. That is fundamentally the opposite of 'you must be 18' and it cannot be tolerated, even if the motivation is positive.