Would you like to support the statement that fluency in Irish is now, or ever in the past was a requirement to join the civil service, the public service or the Gardai to give them their rightful title?
I have never seen such a requirement.
An extract from Wikipedia
From the foundation of the Irish Free State in 1922 (see also History of the Republic of Ireland), a degree of proficiency in Irish was required of all those newly appointed to the Civil Service of the Republic of Ireland, including postal workers, tax collectors, agricultural inspectors, Garda Siochana, etc. By law if a Garda was stopped and addressed in Irish he had to respond in Irish as well. Proficiency in just one official language for entrance to the public service was introduced in 1974, in part through the actions of protest organisations like the Language Freedom Movement.
Although the Irish requirement was also dropped for wider public service jobs, Irish remains a required subject of study in all schools within the Republic which receive public money. Those wishing to teach in primary schools in the State must also pass a compulsory examination called Scrúdú Cáilíochta sa Ghaeilge. The need for a pass in Leaving Certificate Irish or English for entry to the Garda Siochana (police) was introduced in September 2005, and recruits are given lessons in the language during their two years of training. The most important official documents of the Irish government must be published in both Irish and English or Irish alone (in accordance with the Official Languages Act 2003, enforced by An Coimisinéir Teanga, the Irish language ombudsman).