Earlier quoted context omitted.
Look at where there were massive famines with people starving to death. Were those capitalist societies? How many people have starved to death in the semi-capitalist countries such as the US? How many starved to death in the Soviet Union, China, North Korea? When China pivoted to a kind of capitalism, did people start starving or did they start prospering? Allowing individuals to accumulate wealth by being of service…
Plenty of famines happened because if capitalism. Millions of people died in the Bengal famine. Ireland was starved, Cuba was starved. The dust bowl in the US was hugely disruptive and at least partially caused by capitalism. It's absurd to claim capitalism prevents starvation.
Ireland: Reading the description of Ireland, it sounded like aristocratic English landlords brutalizing tenants. I could not find a definitive claim about how the land was acquired, but it did not sound like capitalist acquirement of lands, but rather forceful appropriation. A significant factor was the inability of tenants to profit from improvements which could be taken away from them at anytime by the absentee landlords except in Ulster which then prospered more than the rest. It should be noted that the migration of the Irish to a much more capitalist society (US) is what helped minimize the deaths of the famines. This can certainly be a warning about potential dangers of massive land holdings and could arise from capitalist accumulation, but it is not clear that it actually was such a thing. Rather, it seems more akin to imperialist extraction.
Cuba: Not sure what you mean. Do you mean the various periods of famine under communist rule? Are you blaming the US statist policies of trade embargos? I found the following article to be a succinct and seemingly balanced history of Cuban farming in the past few decades: https://www.anywhere.com/cuba/travel-guide/agriculture Despite embargos, the US has supplied a lot of food to Cuba. Cuba got out of some of the worst famine by doing half measures towards privatized farming though they never let the markets really work as they should.
Dust bowl: I can't find any statistics about deaths. There was massive migration to more profitable areas which allowed these people to survive. It isn't pleasant, but it is better than starvation. This is how capitalism works when disaster strikes. It doesn't prevent the problems, but it does mitigate them by allowing people the agency to adjust their lives to maximize their chances for success. Is your blame on capitalism about the bad farming practices employed? I am not sure that any other governing ideology would have had different outcomes. But the farmers learned what needed to be done and have implemented it such that those conditions have not returned for almost a century. It should be noted that the 1930s time period coincided with strong federal government intervention in the economy as they implemented work restrictions, price controls, wage controls, and explicit governmental crop destruction policies. In fairness, they also implemented measures to deal with the underlying problems causing the Dust Bowl.