Rag, O'Callaghan said that Irish children were "indoctrinated" (aka brainwashed) with "anti-British" propaganda.
Your quotes did not dispute that.
Kinealy said that "nationalist myths" were taught as history.

Neither said that anything changed when Free State morphed in to the Republic.
Jim made that up in desperation to save his own silly face.

Here is another source that supports my view."Catholicism and the Curriculum: The Irish Secondary School Experience, 1922-62"

"This history was "shaped by nationalistic fervour" and a "desire to establish a legitimate continuity for Irish separatism."(16)

The approach to Irish history showed the concurrence of dominant ideologies of Catholicism and conservative nationalism. John Broderick has characterised this as follows:

The idea of history that we got was that we had been oppressed by our neighbours, the British, for seven hundred years; that the Catholic religion in particular had been suppressed and was persecuted; that there had been a great revival in the nineteenth century with Catholic Emancipation through Daniel O'Connell, and that Catholicism thrived under that, but that coming into the twentieth century we were being Englified and we were becoming more and more part of the United Kingdom and that was why 1916 came about; this had to be broken, the Irish people had to be shown what their heritage was. In a capsule this was the history of Ireland.(17)

Educators encouraged the teaching of this perspective on Irish history through study of outstanding individuals and significant incidents. Teachers were informed that the continuity of the separatist idea should be stressed and that pupils should be imbued with the ideals and aspirations of revolutionaries. The other side of this emphasis on Irish language and culture was a bias against Protestant Anglo-Irish culture. This exclusion was blatant with respect to the teaching of English. "

"Only after 1960 were educators to change attitudes towards the curriculum in the interest of meeting social and economic needs, helped by a more open-minded outlook in the wider society--a matter for another study."
Thomas A. O'Donoghue
http://www.edu.uwo.ca/hse/98odonoghue.html