Even without that his ideas were a daft excuse for starving the poor because it was the 'convenient' thing to do for the people in power because feeding the poor actually working the farms would cut into their short term profits. Look at the Irish Potato Famine. The disporia emigrated and helped drive industrial booms and some like the Carnagies became wealthy. This points to the policies not only being a humanitarian catastrophe but a vast squandering of resources. The events came to a head after the actual man's death but he still bears some responsibility and his followers the remainder.
Meanwhile Ireland is /still/ down in population compared to its peak. Given the evidence I can't help but judge Malthus and his ideals as both stupid and evil. I suppose that describes a lot of downward historical trajectories actually - people in power do something selfish for short term gain because they don't see or care of the costs, ruin the lives of everyone around them a thousandfold and eventually themselves before permanently damaging their institutions.
On another note food is so far from being the limiting or driving factor for population it isn't funny. What truly drives reproduction are the actual incentives - even back in ancient times farmers had explosively sized families while the urbanized tended to have more modest sized ones simply because of other resources constraining. Neither human labor nor water, nor arable land are in scarce globally although all three are mismanaged some.