Nah, I have to disagree with that!
Sure, you are right that reviewing is subjective and there doesn’t exist an ultimate truth.
But what I meant with „biased“ is that some people have their opinion already made up even before listening to stuff.
Look at Ghent, he listens to a new AVA song and even before clicking on the play button he thinks it’s shit. But what if this song is the greatest thing Tom has ever recorded and 99% of us think it’s cool!? It would still get a irrational review from him based on his hate for Tom.