The glass-half-full here is it’s an incredible signal that one of the largest financial gateways in the world is _able_ to do this with current capabilities.
They are enforcing rigor, on agents, the same way they would on humans. Do people think Stripe's engineering team would have been able to progress if each individual (human | machine) employee was not under harness and guardrail, and just wrote code willy nilly according to their whims? Vibe coding is whimsical, agentic engineering is re-applying what brought and brings rigor to software engineering in general, just to LLM outputs. Of course, it's not only that and there are novel problem spaces.
They still need someone to review and hopefully QA every PR. I doubt it’s saving much time except maybe the initial debug pass of building human context of the problem. The real benefit here is the ability for the human swe to quickly context switch between problems and domains.
But again: the agent can only move as fast as we can review code.