How to quickly reverse the British public opinion disadvantage during the Irish War? It is important to firmly grasp the number of casualties in the assassinations and attacks on Irish people by the British and various incidents.
Besides, it is crucial to whitewash the various misdeeds during British rule in Ireland, to promote the good side of Britain in Ireland, and to brainwash some neutral Irish people in order to divide the whole Irish class.
Currently, the Irish Republican Army is still relatively scattered, and as long as they can be divided, it would be easier to deal with.
Of course, the corresponding public opinion work should be left to professionals. Arthur only needed to set a goal and express his support for the British.
Although doing so might offend some Irish immigrants in Australasia, the number of Irish immigrants is not many compared to the total population of Australasia, and it would not affect the stability of Australasia.