How can GDP determine what a country can produce in times of emergency? There’s a half-dozen countries that can make computer chips - how would you infer the ability to do this in an emergency from GDP?

Australia has next to no steel making yet our GDP is high because we export a shitton of iron ore - how can GDP capture this?

What can you infer from the GDP of North Korea? If they declared war on Japan, would you look to GDP to determine the likely winner?

Print a ton of money and give it to the banks and you get GDP growth - how is that in anyway a meaningful metric?

GDP is not like a weather report, it’s more Keynesian voodoo used to give an impression that your bullshit government is growing the economy when really they’re just diluting everyone’s purchasing power.