I guess I don't really get the point. If you reduce the alcohol content in the beer, then of course one would be able to consume the same amount of beers as they normally would and not wake up with a hangover merely because they drank beers with a very low alcohol content.
That's like saying I discovered this amazing weight loss trick because last week while still eating the same number of times as I normally would, the portions I ate were smaller, so somehow its a 'miracle' I lost weight. Or just common sense. Consume less food, you lose weight. Consume less alcohol, and you don't get a hangover. Big deal.