There's much more to the story. GNOME is a sort of authoritarian organization known for their antisocial behavior: https://igurublog.wordpress.com/2012/11/05/gnome-et-al-rotti... (and there's much, much more).
Since GNOME is the default Ubuntu DE, they have a certain responsibily to listen to the users/devs and leave the system open (to an extent). But their direction is the opposite:
https://web.archive.org/web/20210901171117/https://twitter.c...
They've been doing massive reduction in functionalities, really insane like limiting copy/past of terminals just to the current screen (which hurts any sysadmin), generally without any way to enable them back.
I haven't heard of any other OSS organization trying so hard to limit freedom of their users/devs, and this is an explicit goal - they don't want to weaken their brand.
GNOME is nothing short of the Oracle of open source.
A distro making your project the default doesn't give you any responsibility.
I fundamentally agree with you. I don't think responsibility is quite the right word. But if they don't seem to care about a massive portion of their users, why are they building gnome at all?
I agree that responsibility is the wrong word, but I've also noticed there's certainly some form of expectation, social responsibility, or care that other projects have and gnome has always lacked. When I started using Linux it was the desktop I liked the most, but some of the choices seem almost hostile or intentionally designed to drive current users away, and unlike most other projects I've used, I've never seen them listen or make improvements based on any feedback from users.