Bizarrely, I've seen a few Tories mention that "no money left" note from 2010 recently. Andrea Ledsom said yesterday that the reason Rishi hasn't yet delivered on any of his promises was because "Labour left us with no money"!
Apparently it's been floated in focus groups, and people still believe it, so they're genuinely considering blaming the last 13 years of shitshow austerity, Brexit, Truss, and economics that even most big businesses despair of, on Gordon Brown.
I was amazed, but mentioned it to a few people, who all said that they know Tory voters who still go on about it all the time, whenever anything is wrong :/