1 - I corrected the errors related to writing, but these aro not the only kind of errors i found. Style, copying another translation are also another kind of errors.
2 - I don't think i understood your point here. All the policies and guidelines the mods have to follow are the Utopian ones.
3 - I can't answer for another moderator
4 - https://portuguesaletra.com/duvidas/prevenir-ou-previnir/
5 - It is average because you copied a lot strings from pt-br translation.
6 - Yes, but when you copy another existing translation as reference. The sentence you are copying from might have different writting style that may create inconsistency on the text as a whole.

Sorry if you feel there is "hate", but there is not. I have been working with Utopian for at least a year, either as a translator and as a moderator, and i do take my positions seriously.

That is why i don't give high scores to every translation.