I thought it was a lot older than that? Like clicking your fingers instead of clapping, I thought it was a 60s campus thing in the US and talk around PTSD. Which later got adopted by the world cos we're just on a cultural time lag. Like a lot of things it probably started with good intentions and for genuine needs. Maybe it's more about specifically online, as we know it now? Not listened to the podcast, but I also blame Tumblr for almost everything.