And I don't care how much she pays for her groceries, but that she's giving the impression that you could live (with a son) of £20 a week if you put your mind to it, leaving people that actually do have to budget feeling bad when they can't. It just bothers me that she's held up as this budget expert when she's such a liar.
I managed the £20 a week challenge in Jan-Feb 2020!
Basically my New Year's resolution was to eat from the stock we had in the house. So use up frozen food, cupboard staples etc etc. I had to get organised to lift out meat to defrost and plan what I had in cupboards to use up.
I only bought fresh fruit and veg as we had so much stored.(I don't say this to be boastful but it's for many people it is quite common to have food stored and still do.a weekly shop.)
This meant that I was spending about £20, including buy washing stuff and loo roll etc.
I agree with you that living on £20 a week without the luxury of good stock in freezer and cupboards is a dangerous and moronic message as it just says that people who can't do this are frivolous and bad at money management.
I often read her postings and thought that I was doing it wrong as I couldn't get to £20. But I could do it when I basically didn't have to buy much!
Unfortunately my 'use up everything in the cupboards' coincided with the start of the pandemic so having nothing in wasn't the best idea.
But I do think all the people who tweet her praise are people who, like me, have cupboards full so a few weeks of a £20 spend would work but don't understand that she is suggesting that that buy's everything.
In summary the £20 is dangerous crap and totally lowers the expectations of the finances need to feed a family.