Timing is everything in politics. If Reagan and Thatcher had faced the voters in the early part of 1982, they would have been crushed. But they didn’t. Thatcher won the Falklands War, Reagan benefited from drastic interest rate cuts and a surging economy, and the rest is history.
I have to assume that Truss is hoping for the same sequence of events: collapse, followed by a recovery fueled by lower interest rates and her tax cuts right around the time of the next election. Will it work? It’s not impossible, but it’s not likely, either.