Probably takes a lot of bubblegum to make one pair of shoes. And of course you have to pay people at least minimum wage to chew it.
In reality, I’d suspect they don’t actually use used gum, but instead by the raw stuff from the supply chain. That’d theoretically reduce supplies, driving up prices of chewing gum, reducing its sales and therefore the amount that ends up on the sidewalk, so the ad would still be relevant as an illustration.
Aside from that, these shoes could really use an ad that starts with “I have come here to chew bubblegum and kick ass…”
