At this point, I think multipolaristas don't even understand the implications of a multipolar world order if Lenin's theory of imperialism is true.
Pre-WWI Europe, "the highest stage of capitalism", was multipolar. The British Empire was the most powerful but it wasn't hegemonic. WWI admittedly started as European powers were competiting for what was very well described in
>>2647958.
So if the theory holds true and we are heading toward a multipolar world order (and we already are), the competition among great powers will not stop, but intensify and potentially lead us to World War III.
As a reminder, after WWI, only Russia had a successful revolution, and it became mostly a matter of industrializing the country after the Bolcheviks took control, as Tsarist Russia was backward on many aspects. The German revolution failed and ultimately gave rise to Nazism. Britain and France didn't abandon capitalism at all, and the US was starting to become the great power it became today, despite the 1929 crisis.
The theory of the US being the single most powerful uncontested hegemon is, I suspect, much closer to Kautsky's theory of superimperialism.
And if the US administration talks so much about invading Greenland, and kidnapped Maduro, it's because they know very well their power is declining.
Every world power will want to have a firm grip on their own backyards, Putin does too. Multipolarity might very well result in capitalist states being more agressive toward each other, there is absolutely zero guarantee it would lead to the world powers letting a socialist state develop peacefully, unless this socialist state is already a world power like Russia was in the 1910s.
Lenin's theory of imperialism if applied to the 21th-century can also lead to very uncomfortable conclusions for multipolaristas (which country is one of the biggest exporters of capital today, if not the biggest?), but all I will say is that, Lenin's theory of imperialism might not even have been correct when applied to pre-WWI Europe as it is shown in this blogpost:
https://pseudoerasmus.com/2016/05/08/bm/For example, French and German capitalists could export capital to India without any problem, and their bankers had no qualms doing business together in the Balkans all despite geopolitical tensions.
But maybe all of this deserve its own thread with more detailed sources, for a later time.
My conclusion is that multipolaristas should go back to the basics instead of waiting for a new world order that might as well be extremely hostile to them, according to their goals, and that is already coming anyway.
You should focus on preparing for the next state of crisis, on connecting with your own working class and activists if you want to make change, just Americans like are doing in Minneapolis against ICE. Being solely a spectator of geopolitical games won't make a change, finding concrete ways to improve the conditions of the working class while upholding internationalist principles however might.