I didnāt address all of what you put, Iāll continue here
That was done on specific request from Xubuntu team members. Most other flavor teams have accepted the defaults & not requested changes. Either way I see it as moot now anyway, given itās being withdrawn rather soon. I sure wouldnāt worry about anything mailing list related.
I sure do NOT see it that way.
Iām australian, which puts me in a rather different timezone to most other folks, so when I enter into certain rooms & try and catch up on what happened whilst I slept, its often quite a lot of discussion. Today catching up on stuff included your profile picture in one of those rooms (which I recognized; and Iām not talking about here on Ubuntu MATE discourse) , and discussion on how to deal with a rather good (alas somewhat inconvenient) suggestion from you which resulted in some changes you may (or may not) have noticed. Many people see what is said on sites like this (and all Ubuntu infrastructure in fact; though this isnāt a Ubuntu site) which can lead to discussions, and decisions that not everyone is aware of or notices as effect.
This site is viewed positively by the wider Ubuntu community; with some minor differences noted. This site allows discussion of EOL releases etc, and non-Ubuntu distros where users are using the MATE desktop; a result of this sites MATE association and some funding (that isnāt related to Ubuntu).
The Ubuntu-MATE portion of this site has been discussed (a number of times) in regard moving to Ubuntu Discourse, with mods here being made mods there etc⦠I hear mention of that due to my own memberships/roles (including name(s) of Ubuntu MATE team members whoāve provided input), but I donāt see any [public/even moderator only] mention of it here on this site. Maybe youāre sensing some of this, which led to your mention of paranoid hat, I donāt know; but I will give my own opinion that the Ubuntu MATE community is seen as part of the wider Ubuntu community.
Myself, I see the Ubuntu MATE users as keen, energetic, but the Ubuntu MATE flavor is lacking contributors, especially developers. Much of the energy that was here (Ubuntu-MATE), has āmoved onā to other interests; that happens to almost everyone.
[ If not obvious; Iām expressing only my own views, and there will be alot that I donāt see & thus havenāt included in my views Iām expressing here ]