Well, everything is relative. But that review is not objective.
OK, he likes it. That is fine. Some people like to eat shit, or dirt, or to hug trees. Not my kind of thing, but that is their right.
When they write a review about it, if they say: "Now, this big shit sausage was still warm and stinky when I tried it, and it was fantastic." or "That tree was all hard and lumpy with gentle wind blowing and moving leaves around my naked body"
That is seriously sick, but objective.
On the other hand, if they say: "Now, this big bowl of chocolate ice cream was perfect, like ice cream (you scream, we scream...) was in the old days. Sweet and natural" or "That girl was wearing green dress, her soft skin was perfect and she was all over me."
Yes, he still likes it, but he is outright deluded or lying about thing he's reviewing.
Same is true about this IF reviews. Dude, it's fine if you like simple emo songs without any notable guitar work, synthetic generic drums and pop choruses. But don't try to sell it as some metal masterpiece, deeper meanings, complex songwriting, bestial growls and angelic cleans, soaring guitar melodies, epic solos and skin peeling riffs.