... critique offered in a constructive and supportive fashion is far more effective than the style offered in the critique in question. I don't see any need for what comes across as unwarranted arrogance in any critique. There is absolutely nothing real to be gained from it for any one.
I beg to disagree.
Far be it from me to defend Isaac, as I am sure he can do it perfectly well himself, but every time I hear those odes to "constructive" criticism, I cringe (to express it politely).
Every criticism is useful, thus constructive. The burden though is on the recipient to understand it properly. My people have a saying that even a mosquito buzz is music for a smart head (i.e., being able to detect even the minute amount of useful information in anything).
Lets not forget the medium, i.e., internet forum. This is not an academic environment and there is no obligation on its participants to provide lengthy, well reasoned and written opinion. This is a free forum, where everybody and anybody, for better or worse, can pitch in, as much or as little they know or have time.
"It sucks" is a perfectly valid criticism. So is
"nice!",
"+1",
"does nothing for me", "bravo!", etc. Just do not fall into clinical depression or quit your day job yet. Put it (as the recipient) into a context. It simply means there are folks who do/do not like it, and they either did not have the time to elaborate, or do not feel eloquent enough to do so, or it is not that worth elaborating. You, as the recipient, pay attention to how many of those comments you get, from whom (i.e., credibility-wise), etc.