Whilst I agree with denormalization of tobacco and restrictive supply as tools to reduce consumption, along with pricing to reduce demand and education to reduce uptake, can you really have a society where certain adults are not permitted to access a legal product because of when they were born? If tobacco is legal to buy then every adult has a right to buy it.
The move towards Government being able to descriminate, curtail liberties, control behaviour and restrict fundamental rights and freedoms is now sold on 'we know what is best for you'. The health message seems to be a road for governments to do what they want.
In the old Soviet Union it was the security message that the West were out to destroy us that brought compliance of state supervision and control along we fear.
In our society it is the health message along with fear that brings subsurviency.
We never understood how 200 million people lived in an oppressive regieme, but I think we are beginning to understand now. You just need a common enemy, a virus for example, and some fear and anything is possible.
So no, it's not right that the government can legislate to descriminate against certain adults. Either ban tobacco or let everyone buy it who wants to.