I burned out, out of the sheer amount of dumps to manage. Looking up their context, understanding at times what the stuff was about, it's just gotten too much to manage alone + honestly it's not a job that I like doing. And then it's just poor management from me. This is being worked on as of the last few days, and the biggest batch only got even bigger over time. Maybe it won't have a blog post though, but I swear this is coming this year.
Also yes there will be more Tamori no Picross coming.