Eelviny Sure. Only one response button in the form of "like" is not very informative way of giving our feedback to the post. With more options we can more detailed explain why we like or dislike specific post and i don't think it's a change for worse.
Currently we may have too many ratings like "optimistic" which i don't know if it was ever used, but we could use more disagreeing/negative responses like mentioned by der_Scheme "Flamy", "Disturbing", "Provocative". Maybe not all three of them, but something could be used in a place of "insane" rating.
Also my guess is that DukeofRealms is telling the truth that similar rating systems give postitive effects on the forums and their functioning.
"Destroying" reputation by trolls argument isn't a strong one as it's clearly visible when some posts are senseless rated.
And from my experience - sometimes i'm just reading the posts, without the will to write comments but i'm giving ratings as it is easier and faster, so i really prefer current system, over the older one.