I am just your average anime watcher that sometimes like to write reviews.I don't write review for a show if I think there is already a review that I agree with near the top. I write concise descriptions for most of the watched anime in tags. Check them out if you are interested.
I rate anime based on how likely I would recommend them to others. No media is perfect. There will always be flaws. Hence the priority to watch anime should be based on its merits and not on its flaws. So I first look for only good stuff and rate based on that between 5 to 10. If I can't find anything good about a show, only then I will look for the flaws and rate based on that between 4 to 1.
10 - 100% must watch shows and also my personal favourites.
09 - 100% must watch but they just fall short of 10/10.
08 - Highly recommended.
07 - You will most likely enjoy this. But it is not something that needs to be watched on priority.
06 - Enjoyable to varying degrees. But these are not memorable after watching.
05 - Only worth the watch if there is nothing else to watch. Either nothing good or bad stands out about them or they just cancel each other out.
4,3,2,1 - I find NOTHING good about these. Ranked based on how bad these are.
The reviews have everything I notice as a merit or a flaw included in them. But their ratings are only based on how much I personally get annoyed by the flaws and impressed by the positives.
This is because everyone's taste is different and everybody has a particular trope that they hate the most while being indifferent to others. But a review is supposed to state the merits and flaws in a neutral way. It is impossible to do so by physically counting merits and flaws and calculating an "objective score" for it when the said merits and flaws have a varying intensity to them (which is always subjective). This is why anyone's reviews should be judged based on its content and not based on its rating.