If writing (incl X/FB posts) is meant to convey "some human being did/saw/thought this and found it worth writing about", then AI undermines human connection and will annoy people. API docs, earnings reports, &c never conveyed that to begin with, so nobody will care about AI use.
Some writing yes, If you want to write a post saying why your company has a position yes; if you are documenting an API, does the average swagger page have a human connection factor? If you are in X/FB, is any of your followers a "human connection"?