I think it falls into the same pitfalls as most super niche communities, like a lot of subreddits did.
For example, the shaving subreddit (/r/wicked_edge I think?). Its mission statement was to introduce people to cleaner, safer, and more efficient shaving methods. And for the most part, with all of its resources and wikis, it successfully did it. But if you choose to stay after you've made your informed purchases, the posts were mostly braggarts showing off their latest hundreds-of-dollars handles, supreme razor blades, brushes made from actual gold, that sort of thing. My point is, the average person (by my guess, like 90% of people going to the site) gets the information they need and then never participate in the community again. But those who stay are those who really want to stay-- people who are most likely to brag and boast. So over time, it falls more and more into plain old dick measuring contests.
This obviously isn't true of all communities, but I think it's a common pitfall for a lot of them. I can imagine privacy is very similar: take all the steps you can to learn to protect your privacy, and then... you're good, for the most part.