I say old school because this style of pruning is ... wait for it ... old. It's called head pruning because the vines end up looking like green and leafy heads. Basically they're like rose trees - in which a vine is made to believe it's an upright tree. Quite different from modern vineyard practice and these vines were retained because they're old, they're neat to look at, and they still "work".
If you're interested in viewing them for yourself, they're to the right of the main entrance at Concannon Vineyards in Livermore California. One of the oldest continuously operating vineyards in the United States.