She had her grand "My name's Jack Monroe and I'm an alcoholic" Guardian moment in January 2019. That was a good few years after the David Cameron tweet. I'm sure she had previously given up drinking in 2017 - there are lots of mentions of it on her Insta - but it didn't stick I guess.
In chronological order, her dramatic Guardian coming out articles go: poor, trans, vegan, alcoholic, autistic.
Incidentally, in compiling that I accidentally clicked on something that truly is a depressipe:
https://www.theguardian.com/lifeandstyle/2014/oct/29/jack-monroe-pumpkin-sultana-scones-recipe
How are they scones? They're about 5mm tall FFS!! Trade Descriptions will be wanting a word...