David Cameron's "big society" was essentially about getting the ordinary punter to pay towards services his Government were cutting down on in their "we're all in this together" austerity programme. The whole notion of food banks is on a similar theme. I agree with you to the extent that it is a disgrace that there is such a heavy reliance on them in what we're told is the fifth richest country in the world.
I'd also say that Labour have to be held culpable for there being the number of food banks there were in the noughties, but in 2019 the Trussell Trust said there had been a 3,900 per cent increase in the number of foodbanks in the UK since 2010 - when you're talking figures of such magnitude, this has to be a party political issue because it seems reasonable to believe that the increase would not have been as great if any other party but the Conservatives had been in power for that time.
https://www.charity-works.co.uk/food...st%209%20years.