No, I wouldn't say so. Even if the programmer is given the schedule from someone else (in English), they have additional context and can ask clarifying questions that this AI doesn't have.
One of the hardest aspects of software development is communicating with the customer, for humans and AI alike. But a translation from layman English to machine code has to happen, at some point.
The software developer has a lot of context with the app and project that cannot be easily passed into the translator (whether AI or human). Going from that state of knowledge to the code by an intermediate, compressed, lossy, ambiguous step of natural language is necessarily inefficient. Whether that translator is operating at human level or not is not the point, going through English is the problem.