you clearly have no experience in any of this beyond the basic theories, if you think we can feed everyone around the world. Particularly if you blame the inability to do so on capitalism.
if you look at literally any metric or statistic covering poverty, famines and petty warfare over the last 500 years of global history (all of western Europe, America, China, Japan, Russia, South Korea, India the list goes on), you will see an inarguable correlation between the introduction of actual capitalist markets and these numbers falling (though amazing the number of people who write about sensationalist incorrect bullshit rises).
"capitalism inspired imperialism" is such a retroactive reimagining of imperialism in the global south, it's laughable. the only time and place where such a concept would be applicable is in post-imperial South America and the abusive trade deals Britain made with countries like Peru (which shows your lack of knowledge given how these deals fall under the concept of 'Britains shadow empire' in modern historiography).
fyi most of the issues still present to this day in places like Africa and South America were caused by policies that were explicitly non-capitalist. like extreme tariffs; monopolies on infrastructure, production and trade to name but a few (none of which are capitalist).
The only other thing that is even similar to "capitalism inspired imperialism" are the foreign policies of America over the last 300 years, which can barely be called imperialism, particularly when referring to the global south.
Either way all your points are idiotic since you are blaming things that have been present since before history (archeology of prehistory dead shows differences in material wealth and death by starvation) on an economic theory that started to come into development 500 years ago.
you do realise if you could step outside your bubble, youd realise youre criticising an economic system because it doesn't fix everything and because the worlds not perfect and thats so disgustingly privileged and simultaneously ignorant that were done here.