Nonsense. I drink a liter of freshly squeezed juice every morning. Mind you, not store bought juice; fresh, organic fruit juiced on the spot. I've done this for several years and in the best health of my life. I balance the juice with a whole foods, plant based diet.
The article doesn't actually cite a reason why fruit juice is bad. They just keep repeating diabetes and obesity are a problem, but neither is caused by sugar consumption. Even diabetes.org doesn't list sugar as a causal factor. It simply is a myth.