Do you also advocate banning the use of the word anime? Should we tell the French to stop spelling it "tennis"?
Not really a very good comparison is it though?
Anime is considered as Japanese animation outside of Japan. It's not like in Japan they spell it "Anime" and in the UK we spell it "Aneme"?
AFIK the French do not have a french word for Tennis, they just incorporated ours.
The equivalent of using Craic over here would be to call a "Toilet" a "Toilette" as that is how it is spelt in France so fine to use it in English sentences over here.