I don't really understand this line of criticism, in this context. What would "generalizing" the information in this article mean? I think the author does a go

I don't really understand this line of criticism, in this context. What would "generalizing" the information in this article mean? I think the author does a good job of contextualizing most of the techniques under the general umbrella of in-context learning. What would it mean to generalize further beyond that?