Is the documentation to be written in English, for English readers? Given the sample provided here, I don't think that it is those skills that are driving the change. They're removing everything from your control, that may have made you indispensable. It doesn't mean they'll definitely toss you out, it means that they very easily can, and probably will. Or they'll forget all about how you held them for ransom, and keep paying a documentation writer well above market salary.