Yeah. Not much "beer growing" gonna happen in THAT!
Barley grows to about 3 foot high and you'd need a 10x10 plot to grow enough for a 5 gallon batch. don;t even get me started on malting.
Hops grow up to 20 high. I wouldn't even consider starting those from seed. Enough said about that.
All that said, that does look like a pretty sweet indoor seed starting "greenhouse" for lettuce. Or Oat grass, which is what they have pictured.