I like seeing what cool new tools and toys are coming into the zeitgeist. Even if they're dumb, or bad, or malicious, as they often are, I think there's some merit in seeing a thing becoming more or less popular and having a conversation about it.

How much is too much? I don't know. I think that's one of the areas where upvoting / downvoting can be useful. And meta posts, for that matter: it's good for communities to self-regulate this way. Personally I have not felt that there are too many.