I did the latter and think the former is necessary. It is like when Dropbox was on here and everyone shit on it. You can offer criticism without being a jerk.
It's not because it does the opposite of what you want. Write good comments, downvote or flag the bad ones, email the mods about egregious stuff. Inveighing against the snapshot state of the thread almost always ends up wrong (it's pretty much already wrong about this thread) and generates noise of its own which works directly against your intended goal - people showcasing their work and getting feedback about it.
