So by that logic, only other devs are ever allowed to say something negative about a game? Is this what you are going for?
I hope you realize how incredibly silly that sounds.
Devs don't need white knights. They need fair critics, without criticism, how would they know where to improve or where their game is lacking?
In this case, fe. and I have no problem with the game at all, but it is not exactly screaming novelty, is it?
Look at today's market for adult games, how much of a chance to be really successful is there, if your game is just another run-of-the-mill incest game?