I'm not that bothered... yet. The UK is in poor shape. The economy has been stagnant, growth opportunities via EU trade are strangled post-Brexit, debt is high. This does limit options. In terms of national interest, it could be argued that a "trust building" exercise might have benefits, because if the international markets start going cold on Labour, it could make it's long-term work across the administration significantly harder.
However, it's not hard to see that this may be political. In terms of Labour's long-term position, it wants to avoid playing straight into stock Tory attack lines about budget-busting deficits that have substantial public traction. Emphasising how bad it is is also an opportunity to cause lasting damage to the Tories' (undeserved) long-term reputation as the "party of economic competence". Then there's the classic of making short-term savings early in an administration and then loosing the purse strings later so the public feel the benefits most around the election. Cynical, but it often works.