From Project Loon homepage: "By partnering with Telecommunications companies to share cellular spectrum we’ve enabled people to connect to the balloon network directly from their phones and other LTE-enabled devices. The signal is then passed across the balloon network and back down to the global Internet on Earth.".
It does not seem irresponsible or pointless to have the facility to quickly set up a cellular network after a disaster. I don't understand how you came to your conclusions??