Literally just noticed this. Although I don't agree with it and won't be using it, its not too bad of an option but should have some limitations.
Like they should only be 'deletable' for a certain time after being posted.
They must fulfill some other criteria like if its a troll review (which there are a lot off) etc.
On one hand, people are free to voice their opinions but on the other hand, many times it can also be just hate-fueled nonsense.