I have to imagine there have been A LOT more than 1000 Tulsa residents who left Tulsa for tech jobs in greener pastures over the last 20+ years.

This isn't an infusion of talent. It's probably a teeny tiny fraction of the brain drain returning to test the waters or, more likely, just to leverage grandparents for some free daycare while pandemic is on. And this is the high-point of interest.