Blending is normally done just before bottling, that way you can adjust your percentages to achieve a specific flavor. I find blends much more interesting than varietals (although few varietals are 100%, wineries rarely say what they have added).
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