The fact that they want to create a special coin for this purpose should be red flag enough. You don't need a new coin for this, you just need an app that provides infrastructure. If you want to get paid, either make it donationware, or let a small percentage, that the user chooses, of the fees go to you.
You're absolutely correct--this application doesn't need its own altcoin, and the whole effing world doesn't need another altcoin. You could easily use bitcoin or Dash or doge or ANY of the many shitcoins on the market to accomplish the task. But we all know damn well that isn't going to stop the flood of these shits. The smart thing to do is just ignore them. In 5 years, their blockchains are going to be dead and this'll be a moot point.