In the grand scheme of things, that is true. However, that isn't the only issue - and public perceptions count. Here's how it's put in an article [1] in the Economist:
> Cutting taxes is the politically easy bit of a growth plan, in other words. But by needlessly cutting the top rate of tax on the highest earners and whacking homeowners with higher mortgage payments, the government has associated growth with unfairness in the public mind. That impression will strengthen as Ms Truss slashes public spending to regain market confidence.
[1] https://www.economist.com/leaders/2022/09/28/how-not-to-run-...