Pumpkin (like most fruits) runs around 6% sugar, so a pound will give you less than an ounce of sugar. You'll lose more to the trub than you'll gain from the pumpkin.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk