I don't know about being back, but it certainly isn't dead. A few years back, I used to get at least 10k readers a day. That number went down to less than 100 a day at it's lowest, I was writing 10 entries a year at most. Last year, I wrote just 4.
One thing I failed to notice was that RSS was still active. So this year, I started consistently contributing, over 150 so far, and I see RSS picking up right where it left off [0]. A lot of my blog post suck, but I write them as an observation and my current understanding of a subject. Readers have agency to skip what they don't like and only read what they like.