The collapse of the situation in Ireland happened so quickly that the British Government must not have anticipated it.
But if one were to summarize, the long-standing oppressive attitude of the British towards the Irish could only be blamed as the chief culprit. Even after large-scale protests broke out in Ireland, the British Government still did not take it seriously.
Whether it was the initial blind shooting by the police or the arbitrary arrests of protesters by various sheriffs, there was no doubt that these actions accelerated the deterioration of the situation in Ireland.
However, up to now, the British Government still believes that they can quell the Irish rebellion at any time. After all, the strength of the British Empire has been deeply ingrained in people's minds, and no external powers could defeat the British Empire, let alone a small Ireland.