Well that and the fact that there was a huge Irish-American population that was hostile towards the UK in ways that I think a lot of younger people and non-historians have really lost sight of because it's not really a thing anymore. The idea of taking sides with the British Empire was a very tough pill for a lot of Irish-Americans, most of whom, unlike today, still had direct connections to Ireland. The famine was no longer really in living memory, but the children of the famine survivors were definitely still alive and influential and they absolutely despised the British for understandable reasons.

History is always way more complex and nuanced than some half-baked one-liner trope on social media.