There's no balance to an opinion like his. The more I drink, the more I make I realize just how little I know about brewing. But it's not just brewing, i it? It's Getting the crush right, it's matching styles, it's altering styles through trial and error to find one you like, it's doughing in efficiently, hop adjustments, GU:BU, water chemistry, fining, yeast farming, fermentation control.....
"Craft" beer is a misnomer past beer made by brewers for themselves. Designed a way you want for you. Commercial brewers are skilled at replicating the same beer time after time after time. What he seems to be saying is that experimental beer is the best type of beer, but I think he's got the wrong end of the stick. I had this issue with one of my favourite breweries; when Cloudwater started they did batch after batch after batch of different beers and if I found one I loved the chances are I'd never get it again! They've balanced it out now and have a core range, but that doesn't make them any less good at what they do.