Project fear really goes back to Cameron / Osborne who made claims of economic damage....which to some extent did happen....the Bank of England injected money after the referendum and the pound lost significant value and has never recovered.If you want to be pedantic, project fear is not dead, as it was never alive
many leavers have dishonestly claimed remainers forecast catastrophic damage literally within days of transition end....so when it didn't happen, they claimed it wasn't true (like this thread by Gasbanni)
But Brexit is along decline over a decade and more......and this govts Brexit policy is not minimise the damage, just keep it hidden.
Brexit + Covid is going to be tough in the next few years.