By the way – no historian anywhere has ever used the term "brainwashing" or have claimed that there was any attempt to make children hate Britain, nor have they ever claimed that what was taught in schools was historically incorrect.

Yes they have.
Indoctrinating is synonymous with brainwashing.
O'Callaghan stated that children were "indoctrinated" with"anti-British propaganda."
Kineally stated that "nationalist myths" were taught.
Myths are not "historically correct" Jim.

Indoctrinating children to believe that Britain was to blame for much of Ireland's problems will tend to make them dislike Britain.
It did with Prof. Richardson.

You are a good example of someone who believes all those nationalist myths and anti-British propaganda. (Not from your own schooling, but maybe passed on from family members.)
We all know that you hate Britain, but not all Britons.
Only those of us who point out that your beliefs are myths and propaganda.