Because Irish people use the words get/gotten. It's been claimed this is an Americanism like it's a bad thing. That's why I asked if people had ever met an Irish person
Ah ok, get you now. I hadn't noticed to be honest.
I admit I DO sometimes get annoyed if my DC's pick up and use 'American words' instead of the ones we traditionally use for example diaper, garbage, sidewalk but only in the same way I would correct them for changing other words for example 'aint' for isn't, or computerspeak/ urban slang (Bae, Yolo, nomnom). It's not that I think there is anything wrong with those words, just that it isn't the ones I taught them.
OTOH - some words that (I think) have come from America - for example - closure(?) - incorporate well into the language as a new and very valid concept/ term.
Honestly though, I still don't think it's an English v Irish/ American whatever thing as such - it's regional too, very much so. I have a friend up in Yorkshire, and every time we go out someone will comment on pretty much every other word I say and how I pronounce it! It's annoying, yes, but I don't think it's malicious.