Just an opinion and observation here but os, compiler, language type of development is a rather small niche when compared to say, oh web site dev, or general app dev. It's a lot harder to do, and most programmers that aren't up to snuff to do it, are either not interested in it (because it's too hard, or they lack the required knowledge) or lack the time and just long to do it. The subjects are complex, and time consuming and people's attention spans have lessened considerably over time.
I don't care where it's at, if we can do it here, then great. If we want/need a mirror, or a sister site, I'm willing to help out on that as well. I just don't want to see it die or go away. The information in the public eye itself is a big problem in the first place. Unless you've been in the industry, or know how it works from working with it for the last 20+ years, it becomes harder to find the information easily. Having a resource like this is pretty important just for the knowledge transfer alone.
You have to kind of expect that not many people are going to jump onto the site, and let it build up. To expect everyone that's interested to instantly find it and start jumping in on it is ridiculous and fairly unrealistic. Managing a site like that is definitely a labor of love or a fun hobby and should be seen as such. I appreciate the time people put into it, whether it's for helping others or simple because they like to.