If I said "a handful of breweries" to you, how many would you take that to mean? Words like these can skew meaning greatly, and are inaccurate. I'm criticising because it wouldn't take much effort to indicate with more skill exactly what the state of things is. It's a careless use of words, in my opinion, which I don't expect from a writer of a factual news article. I'd be ok with it in casual usage.

It's also a shame that you and the other poster are focussing on this rather than the fact that the statement is plainly wrong. There are clearly more than a 'few' veggie-friendly brewers.