Acceptable Wai - fermented products?

[RRM]

Of course, it is not digested as well as fruitjuices. But same is true for almost all food

So, why would you replace (some) fruit juice for vegetable juice?
Of course, veggies cannot replace animal food (very different nutrient make up).

I don't think that "people may get bloated from it" is a solid argument not to eat it.

Not everybody has a perfect digestion (as this forum has demonstrated), so yes, it is a solid argument.