It's a "foothold" as all liberal tactics in the same manner. For example, the soda tax in supermarkets was a foothold that later become "grocery tax." This already happened in Philly so it is a factual claim while new cities across California and Seattle started the "same" approach, claiming it is to reduce obesity for kids and only on soda.
This is from the state that banned straws and are planning to ban balloons, yeah whatever they're selling you, the end goal of this campaign is to ban soda from restaurants and I say not even for kids, but for adults.
Meanwhile, cities across California are littered with feces and needles.