Is watermarking really watermarking if it can’t be independently verified? I mean, all of these text content watermarking schemes require the company to assess

Is watermarking really watermarking if it can’t be independently verified? I mean, all of these text content watermarking schemes require the company to assess if the text was AI generated or not. They aren’t going to tell us where the toss-up tokens are or what is in the red vs green pools of words.