Yes, I think anonymity in reviews is largely a myth, even in "double blind" reviews. For many topics, there are only a few research groups actively pursuing the

Yes, I think anonymity in reviews is largely a myth, even in "double blind" reviews. For many topics, there are only a few research groups actively pursuing them, and you can often tell from what other work they cite, what datasets they use, etc., which lab it is. So identifying at least some of the authors is relatively easy. You might not get the exact grad student right, but you probably know their advisor. Identifying reviewers is a little harder, but it's usually not difficult to make educated guesses unless they are, as you put it intentionally vague. Otherwise the other comments on this article about bad reviews from 'people from "a different camp" simply disliking a given approach' and the like would be impossible to justify.