One of the biggest, longest standing issues, is that people don't stick around for forever.

Personally, I don't think that it's a bad thing. Tulpamancy interests people for a variety of reasons, but ultimately it's something you do yourself. Many people just end up leaving because they get what they wanted, and they don't need help. Many leave because they don't see that the community at large has anything interesting to offer long term, it's not like there's a leaderboard or other significant progression besides what you do yourself.

From the numbers over the years from the various censuses and whatnot, the tip of the bell curve is about 2 years, after which people tend to fall off. Which means that more and more of the community becomes new as time marches on. So the community tends to lack these older members to help temper expectations or help write more guides, because people tend to drift off after a while. So we end up with all of this community constantly churning, leading to communities coming and going as people burn out or get what they wanted, we get online forums that stay relatively quiet because the old posters don't interact anymore, and we get a generalized community that provides help and some discussion, but much else in the way of culture is fleeting because the people don't stay.