No-one is saying it is the 'ideal', or purist way of starting a brewery, but in this day and age it's marketing that will make or break a company.
To just go and build and open a brewery on a small island off the North-west coast, and then start brewing, to see how you get on would be crazy, even by microbrewer standards.
It may be vague, but they have promised a brewery on the island, and I think some peolpe here, including myself, are willing to give them the benefit of the doubt. If all that appears on the island is a visitor's centre, then I might re-think my opinion.