As others have said, this all reeks of a growing realisation that Jack is having - that she's being quietly cancelled. She's become so toxic as a person and brand that even being adjacent to her opens people up to being scrutinised themselves, hence the quiet retreat. I reckon give it a couple of weeks and a new Undelete search will result in plenty more people having deleted all reference to her.
Without media appearances and celeb endorsements, the halo effect/brand rub/implied trust/established authority fades, and coupled with the cost of living crisis biting, I'm predicting lots more Patreon cancellations at renewal.
That'll probably result in an absolute public meltdown, 'the trolls have destroyed everything I built' etc etc and a bit more emotional manipulation just because it's Jack Monroe snd that's her main skillset.
It's interesting to note that more and more grifters and frauds who use the Contrepreneur Formula as their process are being publicly burned right now as long term evidence gathering through the pandemic comes home to roost. Jack had a slightly different tack, but the techniques and pillars of manipulation were identical, hence why once one layer us unpeeled, the rest becomes more obvious. I'm all for it - her downfall will create space for a more deserving and valid voice to fight for people in need