Treasa Ni Cheannabhain
The Irish are as bad as American Blacks at picking weird names from their roots to demonstrate their "otherness" from "The Man."
Many Irish have Irish names, rather than the angelicized versions of those names. The Irish language is still taught in schools; it is the official language, along with English, of Ireland, and is still spoken in several areas of that country.
So your statement is blatantly incorrect.