A pretty sensationalist quote to pick out without additional context after reading the statement in full. This is exactly the kind of thing we call the press out for doing.
From the article: "And importantly, our underlying business processes are deterministic by nature. There is a start and end to a business process. Its goal is to deliver consistent, auditable outcomes.
AI, for all of its incredible capabilities, is probabilistic by nature. It reasons, predicts, and recommends based on patterns and likelihoods. Maybe it will eventually become a state machine—a system that follows the same steps and gets the same result, every time—but it is not there today.
You can’t have probabilistic outcomes in running a payroll, it needs to be 100% accurate and completed, 100% of the time."
I agree with all of this. They're not naive as to say that AI will never be capable to build a system like this, they're saying that it's not possible to correctly vibe code an entire system of their size with accuracy today, that seems like a pretty reasonable take me.