American pizza and Italian pizza are two different animals that share the same name. They both have good, mediocre and shitty examples. I have had all three in both countries.
As to which one I prefer? Ehhh depends on the day.
Other countries also have their unique take on Pizza that I have tried and enjoyed. I had some in Spain and Brazil that were amazing yet very different.
My personal theory:
First off, raw milk does taste noticably different than pasteurized and homogenized milk you find at the store.
Pasteurization: heating the milk triggers the unfolding of proteins (Denaturation). This is what kills the bacteria but can also change the flavor of the milk.
Homogenization. This process breaks up the fat into smaller segments so they stay in solution in the milk. The result is a less creamy flavor.
People instinctually associate flavor with nutritional value. They think that better flavored food = better for you. This sort-of works in tomatoes and a few other fruit/vegetables. However taste perception is a complex blend of genetics, environmental conditions, and psychology. So the results are inherently unpredictable and completely unreliable.
The unpasteurized crowd all fall for the 'it tastes better so it must be better". They then make all sorts of excuses to justify their instinct. " Big corporate milk is evil!!" Blah blah blah.