I find it amusing how we’ve come from treating AI as a novelty to developing a sense of how it writes in the space of a few months. That parent comment doesn’t even have the famed em dashes, for instance. Still, we are able to recognize it as AI-generated just by looking at its syntax.
For me it is the lack of content, the blandness of the statement. You can tell it is just saying vague statements that could be true if you substituted 14nm and 8nm for 4nm and 1.4nm.