"Until full employment is reached, governments need not cut back on public spending."

Temporary price rises are happening in graphics cards, puppies and used cars. That doesn't mean they're not going back down.I remember the furore when petrol broke the £1/litre barrier because the pumps all needed to be modified for 3 digit prices. Edit, yes the prices did go down a bit at the start of lockdown - when no-one needed to go anywhere - but that wasn't a whole lot of use and Income Tax was a temporary tax introduced to pay for the Napoleonic Wars.