Actually, I don't think she is/was.
The country today is in an absolutely dire state, teetering on the edge of bankruptcy and an IMF bailout. There is no growth, wealth creators leaving the country in droves, millions not working, skyrocketing health costs, record high taxes already and nowhere to go. We're on the brink of being completely fucked.
Truss recognised this and decided she had to do SOMETHING to kick start the economy and get growth moving. Growth is the only thing that can fix things. Even Labour recognise that.
But instead of taxing people even more - Labour's approach - and hoping that Labour spending it will drive growth (a policy doomed to failure IMO), she decided to cut taxes to drive growth. Where she went wrong was not first selling the plan to the markets which understandably got spooked. That was the bad mistake.
Had she said "look, we're going to have to take the unprecented move to borrow temporarily to fund day to day spending whilst we cut taxes, BUT we will pay that back as growth kicks in and tax receipts rise", then the bond markets would perhaps have supported it. I happen to think it was actually the right policy. Raising taxes further and further - when they are already at record highs - is not.
Can anyone be happy that more millionaires are leaving the UK than any other country except China - a country with 20x our population? It's diabolical. We need these people to bankroll our public services and squeezing them until the pips squeak is just idiotic.