Another one of their tensions, debating type & quality of message -- several mailing lists I've participated in have spun off subsequent mailing lists to discuss in detail topics (eg. a mesh network discussion on a developer list) or moved to private conversations.
It's good that mailing lists are open and people can talk about random topics -- that's what a forum is for. Good clients let you mute or block people you don't like to hear from.
Here is a 30 second summary of the paper from one of the authors: https://www.youtube.com/watch?v=-t0U7-BiWHw
(I am not claiming that my experience is universal, just that, I think, neither is the one you seem implicitly to be describing.)