As always,

@ "culturally based orgs" (no slight to the OP

)
The white diaspora also has a race, ethnicity, and culture. Even if people claim that NPC and NIC do not have an intent and foundation in said race, ethnicty, and culture, it is no coincidence that NPC and NIC sororities and fraternities are predominantly white and generally service a predominantly white environment (unless they intentionally go into more diverse environments such as "my chapter tutors underprivileged kids in the inner city").
As for the topic at hand, I never believed in recruiting PERIOD. But, my opinion on that only matters for NPHC orgs and REALLY only matters for Delta. As long as Delta doesn't formally recruit, I can sleep at night. What individual members and chapters do to attract members isn't the same as a formal recruitment process. NPHC orgs, and especially the larger ones like Delta, are not suffering for aspirants and financial members. We don't need to go looking for people. It's enough that collegiate chapters do programs and post "rush/informational" fliers. It's enough that alumnae chapters do programs and advertise "rush/informational" in local newspapers. The End.