Exactly. The photos in the article even show this. The modern glasses shown in the article clearly aren't filled with 7x1700-size servings each, otherwise they'

Exactly. The photos in the article even show this. The modern glasses shown in the article clearly aren't filled with 7x1700-size servings each, otherwise they'd be drinking literally thimbles worth of wine in the 1700's. Restaurants do tend to pour only part of a glass, usually 100-175 mL, depending on location, quality of wine, and country. However, I've seen plenty of people in a home environment pour to the top, or at least 2/3 of the glass, they're usually counting their drinks by the bottle though, rather than the glass.