One of the features of the OSR blogosphere is relatively frequent handwringing about the death/decline of blogs. Here is a graph of my blog's stats, beginning around 2011. (The blog started in 2008; I think at that time Google didn't own Blogger so the stats for that period are not available.)
Peaks and troughs, but a clear, steady, linear ascent. I don't see a drop-off in readership; if anything I see the opposite. It's not as rapid as I'd like, but there is clearly still a growing appetite to read all of this nonsense.
But what does that mean?
I think, probably, that just as newspapers didn't kill books, and radio didn't kill newspapers, and TV didn't kill radio, and the internet didn't kill TV, the move to more immediate platforms such as Twitter and Discord has not killed blogs. The older technologies hang around, and can indeed have a very long and productive shelf-life. Blogs are not the cutting edge anymore, but they have matured into an independent and perhaps permanent, and permanently useful, medium.