Sure, it is both. And in this type of situations I think the more important one to tackle is the systemic one, so that putting the burden on the individual is made manageable.

To give another analogy, if you want people to recycle, you need to create recycling stations in their area, and not force them to drive 50 kilometers to recycle a plastic bottle. That burden of infrastructure is on the government unfortunately in some part.

The individual solution is insufficient in this case. Once a problem like this becomes a strong signal at the level of population statistics, it means there's a systemic cause that's stronger than most people's willpower.