I went and read the actual article. Evidently, Wilcox was head of the M1 project, so to speak. He came to Apple from Intel in 2013, which predates the A11 bionic SOC. But from what I gather, Gerard Williams III was the chief architect of the A11, which more or less originated the architecture of the M1 chip, as in efficiency/performance cores, gpu, neural engine, etc, and he left in 2019, so if that didn't upset the Apple cart, then I think it's unlikely Wilcox's departure will.
As to the 'something is rotten' statement people are objecting to, that's a quote from Hamlet. Not one I would have used, but that's a question of taste.