I tend to ask the motivation of releasing oas after all this time, specially when GitHub already has decent API docs
(https://docs.github.com/en/rest)
Hello! From my perspective, as one of the Documentation managers at GitHub, one reason for wanting to use an OpenAPI spec for our REST API is we'd like to move towards generating REST documentation from the code (which will still be curated by writers) and no longer trying to construct this information manually. This is a step towards that!