Yes, games can be addictive for some people but it's comparably very rare. "Punishing" the huge majority of non gaming addicts based on that seems extreme. And I don't think it would matter for addicts anyway.

Addicts would find a computer to play on anyway because they are addicted. In some ways it could be argued that it might even help addicts because using this thing they could get away from their homes and so stuff outside while still having easy access to something they like.

Another difference between smoking and gaming is that smoking harms and annoys everyone around you, while gaming doesn't actually harm anyone. Except if you refuse to eat or something but that would be even more rare.