If managers are trying to push LLMs in order to squeeze more productivity out of developers and potentially replace them, why aren't developers just returning t

If managers are trying to push LLMs in order to squeeze more productivity out of developers and potentially replace them, why aren't developers just returning the favour? Surely, the work output of most managers, which contains many more natural language artifacts than the typical coders' outputs, should be a better fit for an LLM than code.