It could also be a function of the way the laws are written for people to be eligible for government assistance programs. Many of these laws have been either rewritten or relaxed so as to allow more people to be eligible than were originally eligible for the assistance. From that, you get people on government assistance who may not really need that assistance, but, since they are eligible, decide to take it to make their lives more comfortable.
Part of it too could be the Cloward-Piven approach (Cloward and Piven were acolytes of Alinsky and buddies with the Clintons, Obama, and Ayers) where the goal is to overwhelm the support system by having as many people take advantage of it as possible, cause it to crash, generating a groundswell of support to enact REAL (their preferred) change.