It's been incredible watching one of the great world powers essentially commit economic suicide

I mean, it's not great, but it's also a long way from suicide.

https://www.reuters.com/article/uk-britain-eu-growth-idUSKBN2AB18K

“For the EU on average, the exit of the UK from the European Union on Free Trade Agreement terms is estimated to generate an output loss of around 0.5% of GDP by the end of 2022, and some 2.25% point for the UK,” the Commission said.