do the japanese users use nests or streaming a lot, haven't really seen it too much yet
Discussion
Not sure, but I haven't seen either.
From what I've seen streaming happens on Discord (and thanks to Kojira-san & Tsururun-san, some sessions on YouTube). Mostly it's dev stuff but sometimes karaoke.
While you may know better having met them IRL, basis Nostr interactions, I personally feel that many of them are more comfortable in text than voice chat with strangers. I haven't seen a single Nostr nest posted 😅