The campaign strategy is a method of using the electoral hubbub for advertising that literally opens doors and gets politically unengaged people to think about politics. It's been pretty successful in peeling potential new members off of electoralism. They've basically doubled their membership as a direct result of the 2024 campaign.
Knocking a door or handing out a flyer for a campaign with reasonable goals most people support is going to be a much more effective strategy than deploying a pop-up ad on the web or walking up to someone and saying "Do you have a minute to talk about our Lord and Savior, Josef Stalin?" which is the only thing average Americans will hear if you start trying to talk about politics outside of the educationally designated be all and end all of politics that is electoralism.