It's the same story with trying to get rid of plastic straws.
In both cases, I don't want to dismiss the problem - it's just that there are bigger fish to fry to make a much large impact to the bottom line of plastic pollution.
Now, after reading through the "Our Story" of Podswap's website, I can see that the real selling point is: "Our batteries keep dying prematurely, and we don't want to fork over the cash for a whole new pair."
Recycling is great - keep it as a value proposition, but it shouldn't be the main marketing push here.