That's marketing speak. Any time you adopt a change, whether it's fixing an obvious mistake or a subtle failure case, you credit your users to make them feel special. There are other areas (sama's promised open LLM weights) where this long-term value is outright ignored by OpenAI's leadership for the promise of service revenue in the meantime.

There was likely no change of attitude internally. It takes a lot more than a git revert to prove that you're dedicated to your users, at least in my experience.