those old-school mailing lists were a bit less scary than broadcasting on social media, where you have to contend with senior scholars, random internet trolls, and fear of being canceled for saying the wrong thing.
If I were to address this, I'd create more ephemeral, highly curated online/offline groups with a solid face-to-face component. Reducing context collapse.
Amy Zhang (npub1vd6…cphg), Michael Bernstein (npub1v5s…h9wu), and I have done some events like this but it takes a lot of energy to keep them going.