My total guess is weighing scales used to be expensive / inaccessible for the common home baker and one of the first popular recipe books thus used volume, became wildly popular, and indirectly taught a generation of home bakers that baking recipes are by volume, not weight.

Eugene Jarvis made such awesome games. If you loved Smash TV back in the day, you should check out Nex Machina for a modern take on his classic twin stick shooters.