Malthus was accurate only if you never consider developing new technology or food sources. His ideas were fundementally limited by narrow sighted racism assuming that minorities wouldn’t develop agriculture. And that they wouldn’t be able to have higher yields than achieved than were already achieved.

Even as his ideas have been applied to population genetics in ecology fields for environments undergoing change researchers are realizing that unless a species is very specialized to just one food source they’ll find something new. And that may have other ecological impacts, but it stands to reason humans will find alternative sources as well.