Back of the envelope:
There are ~24,000,000 people aged 18-24 in the US. Assume half are female: there are ~12,000,000 "girls who might code" in the US. Of these, 12.6% are African American. There are ~1,440,00 "black girls who might code" in the US.
There are ~400,000 people who live in Tulsa.
There have probably been several "Tulsa Codes!" events in the past couple years, but either way just stipulate that it could happen. A "Tulsa Codes!" event addresses just 400,000 people. For logistical and practical reasons, that event locks out an overwhelmingly huge number of potential beneficiaries.
But nobody has a problem with "Tulsa Codes!". Threads aren't full of people ranting about "third wave feminism" when they do.