"Unlimited" marketing BS aside, the article is mostly a puff piece about deployment of LTE in the unlicensed 5.8ghz band currently used by wifi etc. So when they say "a future without wifi is possible", they mean it literally: you won't be able to use wifi in the 5.8ghz band in many places.

https://www.eff.org/deeplinks/2015/11/hurricane-lte-u-dont-l...