Do you mean that there aren't that many critically-acclaimed games nowadays (relative the the number of games coming out) because there aren't enough reviewers? I can't really think of many great, recent games that haven't had enough reviews or the attention they deserved. Sure, that might be some cases; but, in general, it just feels like we don't read more positive reviews because we're not getting that many great games.

I think that if the number of reviewers were to increase, the ratio between critically-acclaimed games and the total number of games coming out would still be very unimpressive.