Disclaimer: I am not trolling, I am an autistic person who doesn’t understand so many social nuances. Also I am from New Hampshire (97% white), so I just don’t have any close African-American friends that I am willing to risk asking such a loaded question.
Irish-Americans found an affinity for corned beef as they finally had access to meat and especially beef. They initially lived in and near Jewish neighborhoods, so, it became popular to boil up corned beef, cabbage, and root vegetables.
I believe Americans serve it on Paddy's day and / or is seen as a stereotypically Irish meal over there. I do recall being asked over there if I ate it regularly.
As I said in another comment there my oul boy did actually really like it as a meal but I think it's more a misunderstanding though it does have some weird historical roots.
Thats wild I didn't know that was a mainly Irish-American dish. My mother always makes it every St Patrick's day I think it's delicious. Don't tell me that soda bread isn't traditionally Irish either??