Sorry... this would read better as

"But that is human nature at its lowest, and I dare you to deny that such attitudes were not present in 1847 Britain... or assert that the quest for short term success was less important to the ruling classes than the welfare of the poor."

Food was exported from Ireland during the famine... and not by the starving poor, I dare say. Then who, pray tell?

And your premise: "Well yes logically it is easier to move people from a place in which all they will ever be able to do is subsist and suffer, with ever increasing frequency, chronic food shortages and unemployment." is based on what? That large sections of the Irish land mass somehow disappeared... or was made sterile? Or is is actually that large tracts of land had been "given" to political allies of the ruling British classes... leaving the Irish to be "tenants" in their own country, while the agricultural products were exported by enrich the coffers of the "new" land owners.

Don't worry, it's not like it hasn't been done elsewhere... America has nothing to be proud about when it comes to our treatment of Native Americans. The "lucky" survivors got stuck onto reservations... with high unemployment and other social ills that are "obviously" their own fault... for what? losing out to an overwhelming horde of European invaders?