First, we must classify fiscal policy, which may be contractionary when the government wants to cool the economy, or expansionary when the government wants to stimulate the economy.
In the 2008 crisis, the government increased its spending to stimulate the economy, so the government adopted an expansionary fiscal policy.
However, rising spending has made the state swell. The purpose of reducing the size of the state to balance the budget is a contractionary policy aimed at reducing the state's spending.
Both policies can stimulate the economy if done at the right time. In the context of the crisis, it makes sense to increase government spending. However, after the economy improves, to stimulate the economy, the state must have a balanced budget. This is essential for attracting private investment and increasing the economy's productivity.