Gourmet_DAO I see your opinion, and I will tell you: there simply is not enough time (which I at least consider valuable) to read all books and form an opinion on them by myself. That is the reason why I reach for reviews.
Thus, as an author myself, I can see how aggravating it can be to see a 1 star review as it brings down your score, making you receive less viewers and generally makes your book less read. However, every time someone brings that topic up (1 star reviews ruin the review section), they will have to deal with people commenting “hurr dur, what about nonsensical 5 star reviews then”, so I believe if getting rid of nonsensical 5 star reviews will also get rid of 1 star reviews, then I think it is a necessary evil (or good, for that matter).
Also, as to how all reviews are subjective: we all know, some reviews are better than others. Theres no need to pretend this isn’t the case. Not all reviews are equal. There is no slippery slope in which deleting one review may lead to deleting other reviews. It is like saying, “I don’t give my child candy, because what if he one day starts to do crack?”
The boundaries are well established. If you don’t understand, here’s an example=
“I hate this I hate this I hate this. 1 star.” Is spam.
“I believe this novel is not up to par because of […]” Is a constructive review. The difference is night and day.