If not, same handle over there, I can get you in touch with them. Or hit up Boris, he knows everyone and is happy to make connections
There's also a full day at the upcoming conference on ATProto & scientific related things. I think they com on discourse more (?)
To me something git-like with a peer review UI (a la pull requests) seems far more natural for distributed academic publications than a social media protocol though.
ActivityPub, based on my understanding, really doesn't work like that - while you an oauth with your mastodon account, the expectation is you'll be handling identity and back-end bits, and then sharing events across the network (happy to be corrected).
Part of what kicked this off is seeing ATProto's new devrel person at a meetup and finding their vision pretty compelling.
But yes, ActivityPub is more "robust" and decentralised (hence also jankier)