Not sure what question you're supposing he asked which was in the article. OP's point seemed to be that correct words written by a human could be effectively the same as correct words written by a machine, supposing the machine managed to be correct by learning from human content. The 'obvious' part is this wouldn't be true if the AI content was incorrect. At least that is what I got.

If restaurant asks to only eat the food you bought there at their tables, the question is not "but what if food from other places also is good"?

Can't wikipedia ask who and it what way writes content on their pages?