What complete and utter bullshit.Do you think thats all the Irish lived on was spuds?
The famine is a myth created by the brits to cover up the starvation of millions of Irish people to feed their colonies overseas.
The tenant farmers saw a famine. The landed aristocracy saw a potato blight. England bought many tons of Indian corn (Maize) and offered it for very low prices, perhaps as much as they could conceive of doing in those times.
The Irish were not permitted to fish using boats at sea without paying a tax. Some did, and the very nice sweaters with knit patterns on them were how the Aran Irish recognized their dead after they were lost at sea.
After tenants left, or couldn’t pay rent and were forced to leave, many tenant farms were converted to grazing, which took less manpower, and provided more income.
The famine wasn’t a myth. It was a tragedy.
Many different individual flaws, no one of which in itself was enough, combined to create the reality of the famine.
In hindsight we can see it. At the time, it was harder to understand.