It might be water under the bridge to you but to the people of Ireland it is their history for good or ill. Do you really expect them to say that it doesn't matter.

For over 700 years the British (in various guises) trampled over the people for their own ends. The native population suffered at the hands of the British (in various guises) and to compound the matter some idiot on a folk forum tells them it's all water under the bridge.

Sheeeeeeeeeeeeeesh