I get your point about technical specialisms and mastodon. I couldn't get over the friction of localized control and data ownership. Too much responsibility on admins. And of course, while I agree you can get access to a variety of communities on there (at least, some), it still fails w.r.t. my last paragraph.
Discussion
Oh, sure. I don't post very often on Mastodon, but the academic related content is not really found elsewhere, and I don't reference my account there as any reliable way of reaching me.
Nostr is clearly the superior underlying technology. I'm just really looking forward to when the most frequent topic of discussion here isn't...nostr itself 😏