Facebook is continuously updated by me at least with releases. I don’t have access to other social media of CP, but I’d maintain at least the update notification, it does not cost much. About blogging, I used to write some blog posts about CP on my own site and also on CP itself and interestingly those are the only posts I even ever received comments to (on my site), so it is actually worth it. However that takes time.
I think us less experienced devs and users can help where we can. For example I provided a couple new features that made it to CP core. It was no big “whoa” feature, and anyone with little PHP knowledge can do such things. We need help in DOC writing, etc all shown here Currently Active Projects
Now also I’m setting up a testing project (see Release testing system | Help needed - #9 by ElisabettaCarrara) which is basically something anyone can help with - it needs basically no knowledge (actually the less experienced the better because it helps catching UX issues)
I think (no, I know) the main issue is like in any society or group: we do a lot of talking and not much action. This is unfortunately just normal. I believe Pareto principle - Wikipedia pretty much applies here as well.
So for example assuming we really have 5k users (we do not, but that is the number of sites that supposedly use CP), we would have roughly 1k “vital fews”
We do not have 1k vital fews, we have some perhaps 3 vital fews. That makes it 15 users. And that pretty much correlates to the amount of voters on polls, commenters on posts, and voices on releases. We rarely have more than 10 distinct voices.
So there you go. Does someone really want to develop a paid product for 15 active users? Nope. Not even a fool would do that.
Does someone want to contribute where they can because they want to, or because they require the project alive, or because they are fools? Yep. Perhaps, we should update our tagline again 
(note, this is not intended to offend anyone or complain - it’s just facts, and perhaps there’s a better word for describing “those who contribute to a project that has basically no safe future nor reward” than fools, but I couldn’t find any. “Courageous Pioneers” maybe 
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