I think Ash Williams (Bruce Campbell) said it best in season 2 of Ash Vs. the Evil Dead, something along the lines of, "critics have shitty taste."

I blame mostly the mindset that a job like that can create. A critic/reviewer is often pressured to agree with pop culture in order to have their opinions validated. Movies and music are a good example of this (cough Star Wars cough). Actually look at most critics vs audience aggregations on Rotten Tomatoes or the fact that very few outfits even write music reviews anymore beyond Pitchfork.

There are very few outliers in this case and are often viewed as malicious, for example Jim Sterling.

I personally never read reviews before I ingest some entertainment I have interest in. At most I read the closing paragraph of a review which is likely to contain no spoilers and sums up the critics opinion. Scores are irrelevant to me as well, I have my own scale.