It depends, is the text of a technical nature? How exactly is one to know they're being deceived if, to take one of the examples that has been linked in this discussion, they receive a mushroom foraging guide but the information is actually AI-generated?
You first check who published it. Is the author an expert in the matter with years, perhaps decades in the industry?
Heck, we always did that since before GPT.
Good authors will continue to publish good content because they have a reputation to protect. They might use ChatGPT to increase productivity, but will surely and carefully review it before signing off.
Is it about "me" specifically? Anyway, how do I know the biography of the author I find isn't also AI-generated at this rate? Or that the purported author actually wrote the book? Your solution still ultimately depends on there being non-generated information somewhere down the line.
I thought it would be pretty obvious that one should look for biographical data from external, independent sources. If the person has earned a reputation in any industry, they'll probably have articles on respectable publishers, would have presented in conferences, maybe even have patents, etc. Just Google their name. Then Google what's associated with them. If one doesn't find anything solid, discard the book. It takes no more than 5-10 minutes to recognize a solid reputation like that.