Global south is not the majority of the population
And I am from the global south, I don’t know anyone that thinks the US is a threat
China and Russia on the other hand, yes, very much
May turn out that it’s not a threat in the same way you are not a threat to a homeless man. Until he takes over your job and puts a paid gate in his alley, of course. Then he’s fucked up, lost his goddamn mind and must be dealt with in the name of our freedom.
You may want to consult the so called 'global south' on that question who represents the majority of people on the planet and seems to have quite a different impression. Undoing America's 'rule based order' isn't a geopolitical threat to the world, it's a geopolitical threat to the US. Why would billions of people on earth be afraid of living in a world where their countries have actual influence? You may want to get used to the fact that you're not going to get to define what's 'sane' for everyone for much longer.