I'd be interested to see the research on this. I know they suggested that there's not a lot of concrete evidence so far. I'm sure people with a milk intolerance would love to have more options.
I also agree with Derri on the point that we can do things other animals don't without it being detrimental to our health. Animals also don't set their food on fire, which unlocks a lot of nutrients in different types of foods. This is why people who strictly eat raw food diets have to be very careful or they'll have nutrition issues.
Don't drink milk if it's unappealing or if you think the fat content is too high. Don't drink it if you have an intolerance. However, your body will break it down the same way it breaks down everything else. If it has fat, carbohydrates, protein, vitamins, or minerals that you can process...your body will take it in and break it down.