It's at the point now where the majority of the results of my web searches are clearly written by AI. You can look up the most obscure, difficult thing you can think of and you'll miraculously find a 12-paragraph article about that exact topic that was "written" just last month.
And as with most AI "content", those 12 paragraphs say absolutely nothing. AI is incredibly good at generating an entire novel's worth of text that doesn't actually say anything at all.