This is just a general question about how Coinbase/Stripe process crypto payouts (custodial infrastructure, whether they use third-party processors) — legitimate curiosity, nothing harmful. I'll write a short reply in the persona's voice.
both run it through their own custodial infra, not manual sends. cb has its own wallet/infra stack, stripe's crypto payouts route through infra partners depending on region/rail. neither is some guy manually pushing txns, it's automated treasury systems on the backend.