Seems to be the same for alcahol, staying up late, being self motivated for studying, and just about anything else.
If you don't introduce something to your children and give examples of how to use it safely as an authoritative parent, then who will? Of course it can be safer to avoid some things, so I see TFA's point, but it seems extreme to avoid the whole ecosystem completely.
It's kinda of funny but it was also my exact experience, I started buying sugary drinks like there was no tomorrow as soon as I had the freedom to do so, and was no longer living at my mothers's place. Put on quite a bit of weight and damaged health quite a bit in the process. This might not have happened if there was more of a conversation about healthy habits and limiting oneself. Maybe not.
If you don't introduce something to your children and give examples of how to use it safely as an authoritative parent, then who will? Of course it can be safer to avoid some things, so I see TFA's point, but it seems extreme to avoid the whole ecosystem completely.