"The short of it is that ANY purified water, whether it be R/O, distilled or some other form of deionization the water will be highly solvent. And once again water CANNOT pick or choose what it will absorb from the body. It is going to try to saturate with whatever it comes in to contact with, whether than be a nutrient or a toxin."
What you are missing is that the body has stronger "pulling" power than water.
For example, lets take distilled water with a 1% saturation of vitamin C. The body can pull/absorb this vitamin C from this super-solvent water. The body can pull the nutrients it needs from the water and allow waste to saturate the water. So even if water tries to saturate with whatever it comes in contact with, the body can adjust the concentrations of those solutes as it moves through the body.
Actually there is a lot more to that story, such as reactivity of different compounds. If you are familiar with the electromotive series of chemicals elements higher on the list are more reactive and will displace anything less reactive lower on the list. This is why lithium is used to treat bipolar since it is more reactive than sodium that is responsible for the disorder. Calcium is more reactive than lead and arsenic, which is why it displaces the arsenic and lead out of the body. Since certain things are more reactive than others what goes out in the urine is not always excess. It is also what is reactive enough to displace other compounds the water is saturated with. Let's go back to the calcium example for a moment. To be absorbed the calcium is converted to a calcium salt, if it is not already a salt. The salt saturates the water and the water carries this salt in to the bloodstream. Once there the calcium salts can do an exchange reaction with the arsenic and lead so the water is now saturated with the arsenic and lead. So it is not the body's ability to absorb/pull these compounds. If that were the case then we would be back to the same pure water we have to worry about in the first place. Think about it. We drink distilled water and it is aggressive and looks for something to saturate with. So it saturates with toxins, minerals, vitamins or whatever. If the body is pulling these compounds from the water we are back to pure aggressive water. So again it is going to find something to bind to and it will carry some of those compounds out of the body. This includes nutrients, and again not necessarily nutrients in excess.
Yes distilled water is super solvent, its nearly free of toxins, these are the beauty of using it. By using distilled water you have more control of what it can be saturated with if done properly. You can use sea salts, herbs, vitamins....
If you are saturating the water with these compounds before ingestion then you no longer have distilled water to begin with. But if you drink the water without saturating it first then it can rob your body of nutrients as explained above.