Simply, craft beer is beer created from the perspective of producing great tasting beer... Craft beer = birra artigianale = bière artisanale = cerveja artisanal = cerveza artisanal = (I think) håndværk øl. It’s beer for the world of beer drinkers who care about the taste and character of what they’re drinking, whether it comes from one of the largest brewing companies in the world or the person brewing in their restaurant kitchen down the road.
Let's unpack, shall we? Caring about the taste and character. Hmm. What is character which is not taste? I can buy "care about taste" because I think the key is the personal experience. I like the idea of "intent of perspective" especially as clarified in the comments where we read "... I am to a certain degree inside the minds of brewers and saying that the great majority of their beers are born of a desire for great flavour." So the definition is aspirational. It is what is sought, not what is achieved.
Which is an interesting distinction. Is it what the drinker tastes or what the brewer intends that matters? I come back to "theatre of the mouth" idea. Theatre requires playwright and performance and audience. There is no opening night without the crowd.
Does this finish the discussing? Not really. There are still the underlying questions of "who cares?" and "who profits?" from the alleged definition at all. That being said, a definition that is inclusive in terms of brewing scale and one which captures the place of brewers and drinkers might be heading in a good direction.