In reality it was the last straw after decades of English landowners pushing a rapidly increasing local population further and further into the weeds and denying access to traditional lands and their resources.
"The Irish Question" had been debated at length and from afar in the British houses of Parliment for years prior, and there were a number of small famines before the big crop failures that saw millions displaced.
It's another in a common pattern of invaders colonising a country resulting in dire outcomes for those already there.
The best lack all conviction, while the worst
Are full of passionate intensity
https://www.poetryfoundation.org/poems/43290/the-second-comi...
(Technicality trivia - he was born in Sandymount, which wasn't part of Dublin until the 1930s)
I just like occasionally being technically correct on the Internet, the worst kind of correct.
Which, funnily enough, kinda mirrors how the Irish diaspora tended to interact with indigenous cultures they encountered. They were far more likely to get along with and settle down with locals than the English, who looked down on at that sort of thing.
A friend's Great-Great-Great-Grandad was one such, came out to NZ as a sealer, fell in love with a local wahine, ended up living on an island the local chief had designated for Europeans married to Māori. [0]
And a Māori tribe in the North Island is known for the tendency for the occasional child to be born red headed / blue eyed, thanks again to open-minded local ladies, and open-minded visiting Irishmen.
[0]:https://en.m.wikipedia.org/wiki/Codfish_Island_/_Whenua_Hou