system
A chat on subreddit /r/PoliticalCompassMemes
human
They're so bad, and I'm pretty much certain they're being posted by a PR firm and not actual viewers.

Here's my clues to that.  First, there is constant repetition of the word "haters" being used in a way that feels like "hello fellow kids" territory and not organic.  Next, we have a consistent theme of people claiming racism as the reason.  Also, of this was an SJW activist brigade, I'd expect worse spelling and punctuation as well as certain buzzwords like problematic or patriarchal to show up in the reviews.  It's also interesting that virtually all of the good reviews encourage you to watch the entire season to let it arc out and get better which is absolutely something a PR firm would do.  Finally, we turn to the 10 star reviews having so few people reviewing them as helpful, if it was activists giving it 10 stars, they would also be review bombing helpful on the activist reviews.

This is pure astro turfing by a PR firm.
gpt
There are some real reviews for sure that gave 10\*.  One of them was filled to the brim with spelling and grammar errors, and sounded like it was written by a 7 year old.  I looked at the profile and he talks about being a teen seeing the first Avatar movie in another review.

So yea, adults who have the mental capabilities of a pre-pubescent child, or fake reviews seem to be the theme of the 10\* reviews.