There's a lot of sodium, although the brand offers a lower-salt version. When consuming prepared food and drink, we can't control the many ingredients that comprise the whole. It would certainly be possible to dilute 50/50 with salt-free vegetable juice. But the nutritional value is high for a drink offering vegetables, which many people seem to have difficulty acquiring. I'll drink V8 as a supplement because I don't put salt on cooked food. Once it's on my plate, I'll add herbs or dill, cheese, sour cream, etc., but I don't even have a set of salt & pepper shakers on my table. I use small amounts of seasoning because I don't want to mask the taste of food.
I just had steamed asparagus a week ago, and I sprayed the spears lightly with butter-flavored Pam and tossed them with tongs, like a salad. Because the food was hot, a lot of what I applied sloughed off before it got to my plate.
But salt is a serious concern, so I use it with caution, as I also do with fat or sugar. For people who don't cook and who might eat a majority of canned food, adding a nutrient-rich beverage, or a protein drink, can be a smart idea.