Yes, this page is now a lot more cluttered than it used to be. However, I wanted to make sure we have all the relevant pages identified, put in context and linked. Before it would take a lot of experience for a newcomer to find those pages (a paradox). Now we are closer to this goal.
There next step is to work on one and only one landing page for each section. Then we can move many of the details to a visible "How to contribute" section in each of those pages" leaving here the very basic introduction for each section, a link to a main page and perhaps just an extra link to a popular / catchy destination within that topic.
This post was posted by Qgil-WMF, but signed as Qgil.