I have a feeling that most critics suffer from over consumption. I see this in video game reviews. I stick to a few select reviewers who like the things I like (and honestly, if you aren't doing that, why bother?) but even they play a lot more games than I do. Which means when a new game comes along, it being like an earlier made game does not make it any less good. I've not necessarily played that earlier game, so the comparison is pointless for me.

Sure, yes, the game you are reviewing might not be doing anything new or unique, but so what? Does it do what it does well? And that's what I focus on. (And to be fair, the reviewers I watch usually make that point clear).