I think the rot set in when they thought they were being a pace setter and first allowed online commentating.
And it turned out they hadn't even thought through that many online are outright misogynists who lurk in cyberspace and vent their spleen on women.
So when they started getting loads of comments they were thrilled and (which probably shows how shallow their values are) sort of accepted that the loudest voice MRAs must be the voice to be listened to.
Even when moderators started to get a bit toughter they would side with the male view that any woman expressing an opinion about male privileged they took the MRAs view that it was just women who were feminazi's. They even gave some of the loudest male voices newsprint columns.
Many of us endlessly signed up under different names to try and get women's voices heard but we were endlessy blocked from commentating. This must have been 10-15 years ago.
Many of us and other commentators gave up because of the moderation (there was a whole other forum for blocked commentators) and they had a whole review and survey about how to stop CiF from being so toxic.
And they went for this almost confirmation that MRAs are the dominate and therefore right voice and needed them. So all they did was stop comments on any feminist articles. (Although feminist isnot really true as they have only ever allowed a very small fraction of feminism to be published.)
And this create the men's rights consensus that meant they could employ OJ and not think it an issue.
Journalistically they have always been a bit sloppy but now it seems worse as the interns (probably their sons and daughters) who do the research have no idea.
So take an issue like housing, they dont build on the existing knowledge that is in the years of Guardian coverage but endlessly have breatheless first year students going oh my gosh I've just found out that housing policy doesn't help those most in need.
The Guardian is a bit like all those parents who have taken the affirmative route in terms of brining up children and are now trapped into agreeing that everything their ignorant and complacently arrogrant brats say is totally, totally right.
So whilst reading the twitter thread listed above was quite heartening, it wont make any difference.
The Guardian, like many parts of the media, are no so locked into whatever children say is rights and I must not disabuse them by saying they aren't properly informed, that they cant stop now.
So they probably will stumble on, like other parts of media endlessly chasing what they think is the golden prize - to be approved on by young people who have no experience of the world, and think their inner feelings are the guidelines by which the world should work.