I think the lines are pretty blurred about what is “general purpose programming” and what is “Language specific”

For example, if you have a post about C#, the community inheritance chain would be something like: /c/programming -> /c/dotnet -> /c/csharp or
/c/programming -> /c/dotnet -> /c/VisualStudio

Once you start getting more specific communities, the parent “general purpose” communities would become dead / unsorted / random

In reddit people would often post their stuff somewhere in the tree of communities, and would often get a response of either "This community is too niche, you’ll probably get more responses in {Community Node up the tree} OR “This community is too general, you’ll probably get more expert opinions in {Community Node down the tree}”

It would be an interesting idea if it would be possible to set up Lemmy like this, as a node tree of communities… So if you subscribe to /c/programming, all posts in communities that are more specific would show up in the parent communities. So for example if you’d want to see all dotnet stuff you subscribe to /c/dotnet, and you’d see posts from all children (/c/csharp, /c/VisualStudio) - if you have more niche interests you only subscribe to /c/csharp.