Earlier quoted context omitted.
The healthiest populations in the world consume virtually no dairy. Okinawans, vegans, 7-day adventists etc. The Mediterrean diet is largely vegetarian: http://www.abc.net.au/news/health/2017-02-16/10-commandments... 75% of the world's population loses their ability to digest lactose after infancy: http://www.pcrm.org/health/diets/vegdiets/what-is-lactose-in... Milk is for babies. Cow's milk is for cow babies.
Vegetarian ≠ Vegan. Lots of dairy in the standard Vegetarian diet. The link you provided to the Mediterranean diet included lots of dairy (cheese, yogurt, etc.). Also, a lifetime of personal experience says that Seventh-day Adventists eat quite a lot of dairy.
Quoting directly from the link I provided:
If you think the Mediterranean diet looks a little low on dairy foods, you're right. It's certainly lower in dairy than is currently advised in the National Dietary Guidelines
...But traditional Greek Mediterranean populations got calcium from other sources: sardines and other small fish which were eaten with their bones, and from leafy greens (which contain only a little calcium but the large volume of the greens eaten meant the amount added up).