It not nice to call someone else hard work 'trash'.
He's just being honest. Would you rather go to a experienced neurosurgeon or a newbie? It's extreme, but the same application applies. There are always good and bad, it just depends if we want to make a comment or not. Is that not why we choose to read certain manga/manwha, for instance?
I really don't know how your example applies to my comment plus i am not dismissing judgement- we all know there is good and bad when it comes to thing although it varies from person to person. There is nothing wrong with one expressing their opinion but there is a way of going about it without being rude or insulting someone. such as: 'i didn't like the manga, i hated the manga' 'the characters are deviant' 'the characters have no morals' 'the plot didn't make sense, it was underdeveloped or linear' 'the art work wasn't to my liking' (I don't agree with all those examples) but they are examples that wasn't rude or insult someones else's hard work, it simply express one's opinion which some might either agree or disagree with.
Me calling this manga "trash" is my opinion that people may agree or disagree with. Don't be so sensitive and easily offended.（￣へ￣）
Can't believe the rating are high... this is trash.