overreader
/ˌoʊvəˈriːdər/Definitions
1. noun
A person who reads excessively or excessively critically, often to the point of being overly analytical or overly critical.
“She’s an overreader, always finding flaws in the writing style and plot.”
2. adjective
Readily perceptive or overly critical of flaws, especially in written work.
“The overreader in the group pointed out several grammatical errors in the document.”