From the vid I remember @thewineman saying they're also marketing it as organic because they use a wild yeast. But just like with organic honey, this cannot be proved, unless all the bees have been collecting 100% of the pollen from plants you know for sure to be organic; and it is a lot more difficult to track yeast particles through air currents than bees, I would say impossible but who knows.
Beer itself, can be organic but most often isn't. In the US for example I'm sure a lot of the grains come from GMO crops(nothing bad with this in my opinion), the yeast is cultured and probably fed with sugars from non organic sources, etc etc.
I myself put absolutely no weight/importance on the organic label, it really means nothing at all when you break it down. It's the pesticides that are the issue, not the minerals we feed plants with.