I'm not entirely sure what mods can do tbf. It's a individual who just behaves the way they do to seek attention, but it shouldn't take away the experience for everyone else. Like I said, I don't even engage with the individual and they have done it to me previously - but they chose to respond to the point about technical notifications rather than the actual "I literally don't engage with you, what's the point" part.
Personally in my head, the comments above just make me think of Nelson from the Simpsons, the sad little lonely boy with nothing else to do, and I'm personally quite happy to leave that image in my head when I see him doing it and move on. Others might enjoy that approach to, it's quite satisfying.