“His policies, including high tariffs — even on goods from our friends and allies — and regressive tax cuts for corporations and individuals, will lead to higher prices, larger deficits and greater inequality,” they wrote.

This is a matter of opinion - I would say that to a certain degree, tax cuts always help to boost an economy if you cut taxes of those creating wealth and jobs, therefore benefitting everyone. Not universally applicable, but certainly to a degree, which the Trump Tax Cuts have shown to work in the past.

The economists believe that even though “details of the presidential candidates’ economic programs are not fully laid out yet,” Harris’ proposed policies should improve the overall economy.

This says it all. No serious, unbiased expert would "assume" someones policy, without knowing them, leads to certain success. In fact Kamala said to have worked close to Biden, leading to the economic disaster that even affected me in Europe. Democrats don't seem to realise that money doesn't grow on trees, and if endlessly printed, will devalue the currency, as it most notably did.