I don't think Blondie misunderstood. She was pointing out the double meaning that could be used to make this title ironic.
I think there was a time when they wanted "poor" members to feel happy in their low wages by pioneering and giving a small amount of profit from their literature to the organization. But nowadays, they are just unable to say that donations from members outweighs any profits from literature, so they really want upper middle-class members who feel guilty that they are not pioneering and make up for the guilt with money donations.
If not for that guilt, you wouldn't hear anything about pioneering these days. Let's face it. An elderly pioneer sister, they probably break even on the literature she places and the donations she gets and passes on. Hell, they might even lose a buck or two a month from her. But Joe Lowhours and his family, what with his full-time work and the kids and their illnesses and schoolwork causing them to miss a meeting every month, and Mrs. Lowhours causing them to miss a few more with her Chronic Fatigue, but they turn in 3 or 4 hours a month between them and never fail to drop a hundred in the box each month. That's their ideal members.