That seems a stronger argument for AI safety policy experts (such as the ones that the aps is beginning to hire) as opposed to safety researchers.
Maybe there’s an argument that policy experts might chat with researchers at local cafes or meetups e.t.c., but it’s quite second order and it seems like a relatively small benefit compared to the wealth of human capital you’d get opening a safety lab somewhere like India.
They’re standard practice at a lot of the types of firms that AI Safety companies tend to hire from, so it could even just be force of habit tbh.