The allegation is that the "Linux Audio" consortium (linuxaudio.org, github.com/linuxaudio) is compromised, and therefore "dead". The new-session-manager announcement emails come from software@linuxaudio.org. new-session-manager lives at github.com/linuxaudio . The moderators of the linuxaudio.org mailing lists are banning non-session-manager messages. new-session-manager may be one project, but its leaders have infiltrated the Linux Audio organization.
When I wrote the parent comment, I did not notice that I was being redirected from github.com/linuxaudio to github.com/jackaudio; I apologize for that mistake.