I should probably motivate my question a bit. I've watched a number of interviews recently of the "what went wrong in Britain" variety that have been informed by Reeves's pre-budget speech. One of them mentioned the West Wing consensus and that basically there is a certain type of Labour and conservative leader that wants to go back to the politics of late 1990s early 2000s where there was a fundamental agreement about neoliberalism including markets and what was being argued about was the proportion of social spending vs. taxation; progressiveness of taxation and emphasis, but not about the basic logic of the neoliberal system: prosperity is to be maximized, prosperity depends on business productivity, productivity depends on investment, investment depends on sound financial policy and conducive business environment, etc.
Within the West Wing consensus smart young people bustled around solving various problems in a one hour format assuming the basic framework of neoliberal market ordered economy, i.e. every policy has well known tradeoffs.
The interviews have remarked that that consensus was never as deep or universal as it was presented, and that it has now broken down. And that media is in part to blame for privileging the consensus view and presenting it as the only alternative.
Going back to Rachel Reeves, her problem is a very obvious one and sympathetic, UK productivity continues to be sub-par, bond markets constrain debt levels, so some mixture of tax increases and spending cuts can't be avoided. Tax increases and other government interventions are likely to be counter productive to economic growth and therefore they may patch the budget and mitigate the worst harms, but they will further damage UK economic performance.
But a large portion of the population rejects that. They reject being beholden to the bond markets, they reject being beholden to international trade, the reject being beholden to the austerity of the central bank and yourparty, the Greens and Reform reflect that.
The problem is you can't just reject an unpalatable situation. Surely media wouldn't be to blame for insisting that 2 + 2 = 4 even when that summation is problematic. To reject the constraints of neoliberalism - the tyranny of the market - you have to have an alternative. Benn and old Labour more generally understood that. Whether you agreed with it or not they did present an alternative. Greens and yourparty and Reform reject neoliberalism/globalism/free trade/markets but don't offer a replacement.
That means the neoliberal consensus is still the only game in town. Media is right to privilege it and as much as you might sympathize with voter frustration their populist calls to overturn elites is a dangerous impulse which should objectively be cast in a negative light, because it's a call that lacks coherence.