Aren't wifi and a mobile app essential for their target market? The impression I get from this article, and from going and taking a look at the Kickstarter campaign, is that a big part of the audience is supposed to be people who don't know very much about computers and networking. A lot of these people have a home network that is entirely wifi, running off the wifi router built into their ISP provided cable modem.
If I added it up right, more than half of the backers selected a version without wifi. And are there really devices around that only provide WLAN and don't have Ethernet ports?