Imagine what kind of person regularly posts on a subreddit about a physical tool that doesn't require much maintanence. Of course it's going to be the people that take it up as a personal hobby that are going to post - that isn't going to give you a representative sample of the average users. I've been using a mechanical keyboard for years now, and I've visited the sub maybe half a dozen times, and yet I enjoy the feel of my keyboards and they'll continue to make a small but significant improvement to my interactions with computers.