Surely you mean the number of publications, or some other superficial metric (e.g. being the third "supervising" author on a paper with a dozen authors).
If I read a paper and have a great appreciation for the ideas, and have a sense that an author contributed significantly to the aspects I appreciate (either from explicit descriptions of the authors' contributions in the publication, or by speaking to them), why would that not be impressive to me?
If I read a paper and have a great appreciation for the ideas, and have a sense that an author contributed significantly to the aspects I appreciate (either from explicit descriptions of the authors' contributions in the publication, or by speaking to them), why would that not be impressive to me?