Not entirely. Yes there was blight affecting crops but there was more to it than that.

Huge volumes of unaffected produce were exported to England for profit - the decreased yields only impacting the market for locals. Previous famines has seen the British ban exports to ensure the local population had access to food (which also decreased the prices) but not this time around.

English landlords of Irish property were evicting their tenants who weren’t able to pay (since the blight impacted many people’s ability to work) with zero notice or rights for the tenants. Absentee landlords were extracting huge amounts of capital out of the Irish economy, owning vast swathes of the entire country.

The Irish were widely dependent on the potato as a primary form of sustenance but it was due to the potato being high in calories, cheap and easy to grow, and high density yields from relatively small plots of land (landlords dividing up the land into incredibly small divisions whilst simultaneously extracting the highest rent possible for the land).

The Irish were, in essence, forced to eat potatoes due to the extreme economic exploitation they were subject to.

Yet there was no aid from England; she simply sat by reaping profit and leaving things up to the divine - “the market will provide”. There had been efforts to change tariffs and laws but the contention in the governing party about providing aid caused the Prime Minister to resign and the subsequent government threw out all efforts (except those such as offering relief to those without land which forced many Irish to sell what land they had to gain relief and aid).

A Prime Minister at the time launched a commission to investigate and it was found that the absentee landlord system was abhorrent and principally responsible for the famine.

Sadly 1/4 of the population perished, and another 1/4 simply left the country. In some ways, Ireland never recovered.