Are reviewers using AI for peer review?

I recently reviewed a manuscript and, when the other reviews came in, I noticed that one of them seemed to be AI-generated. The questions were all pretty broad and seemed to be more discussion-based than something that directly referenced the content of the manuscript. In fact, there were no direct references to the content of the manuscript. It seemed like someone went to ChatGPT, typed in the name of the manuscript, and asked for a critique of a paper with that title.

I'm wondering if any of you have encountered this either in conducting a review or in a review you received? Do you think you'd be able to recognize AI-generated reviews? I might be seeing AI everywhere but, if this is happening, I worry about how it will impact peer review in the future.