I recently heard a new (to me) excuse:

When in the middle of a group text-chat, someone replied with AI-generated blather. It was dead-clear with the usual sterile vocab, structured buzzphrases, and other LLM "tells".

I politely called him out and asked to use his own voice. In public he insisted that it was his voice and that he used AI only for "formatting". But in private he admits that he created a "gem to assist with multicultural comms", which generated the text. He claims he did it because "not everyone can take the native American English well". A load of bovine manure. I nicely told him to cut this crap and just write as it comes to him. (Basic spell- and grammar-check is fine.)