It is not merely “one of the official languages”; the Irish constitution grants it status as “the first official language”, and English as “the second official language”, obviously granting primacy to Irish.
The reality, however, is that indeed Polish is spoken more than Irish in modern day Ireland, and the former is in decline and will probably be near extinct in a generation or two.
What do you mean?
EDIT: FYI while Irish is one of the two official languages of the republic of Ireland, it's a minority language, with less than 100k native speakers