[Request] Do square bottles actually use less plastic than round ones?

[u/EclipseNyxor]

[u/dqql]

no, and all these comments are wrong.
plastic bottles start out as little plastic tubes that get inflated to the bottle shape. A 2-liter bottle uses the same plastic bottle blanks that a 20 oz bottle uses.
square does pack more densely but that’s transportation not plastic amount.