Obviously, I’m still blogging, but so are many other people. Re-found some old favorites in the comments of this thread, especially some whose feeds stopped updating in my very old version of Netnewswire (3.2.15, in case you were wondering.)
Speaking of which, Netnewswire 5.0 is now available! It’s open source and free, and it requires MacOS 10.14.4 or newer. (Which means I will have to update my operating system.) An iOS version is also on the way.