I’ve used TextPattern for nearly the last 20 years. I’ve written a similar RSS export as I did for my own blog software nearly 20 years ago.
It’s as stagnant as this blog. I don’t really feel the need to replace it, but I have burned down and rebuilt before, using only the core for reinforcement. Is it time?
I won’t bother with WordPress; I’d rather burn it down to a holding page than that mess.