This is my experience on irc today as well. It’s dead.

I used to keep a few channels open at work all day long in 2007. #j2me, #java, #c. The conversation was active with no more than a few minutes of silence at a time. People would say good morning at the start of the day, goodbye at the end, they would talk about their weekend. It was like a virtual break room where you could ask tech questions (except #c was hostile to questions, those guys were weird) and make friendships.

It’s not just less active now. It’s dead every time I look.