LW seems to be slowly becoming self-obsessed.
I don't see how you could possibly be observing that trend. The earliest active comment threads on Less Wrong were voting / karma debates. Going meta is not only what we love best, it's what we're best at, and that's always been so.
You post a question about calculus in the discussion section and get downvoted, since it is "off topic" - ask on MathOverflow. A question about biology? Downvoted, if it is not an ev-psych speculation. Physics? Downvoted, even if it is of the most popular QM-interpretational sort. A puzzle? Downvoted.
Whut?
Links or it didn't happen.
Going meta is not only what we love best, it's what we're best at, and that's always been so.
Do we love going meta? Yes, we do.
Are we good at it? Sometimes yes, sometimes no; it also depends on the individual. But going meta is good for signalling intelligence, so we do it even when it's just a waste of time.
Has it always been so? Yes, unpracticality and procrastination of many intelligent people is widely known.
I'm worried that LW doesn't have enough good contrarians and skeptics, people who disagree with us or like to find fault in every idea they see, but do so in a way that is often right and can change our minds when they are. I fear that when contrarians/skeptics join us but aren't "good enough", we tend to drive them away instead of improving them.
For example, I know a couple of people who occasionally had interesting ideas that were contrary to the local LW consensus, but were (or appeared to be) too confident in their ideas, both good and bad. Both people ended up being repeatedly downvoted and left our community a few months after they arrived. This must have happened more often than I have noticed (partly evidenced by the large number of comments/posts now marked as written by [deleted], sometimes with whole threads written entirely by deleted accounts). I feel that this is a waste that we should try to prevent (or at least think about how we might). So here are some ideas: