A sophomoric and naive analysis that displays exactly zero understanding of the balance of probabilities with regard to Home Rule. Had the Irish not resorted to violence, it is highly unlikely (given the power wielded by Unionism and the primacy of the Ulster question in British minds) that Home Rule in any form would have been forthcoming. Even as it was Ireland only achieved rule over that portion of Ireland that was left once the Ulster question had been resolved to Unionist satisfaction.
It is our common error to assume that NI is what was 'left over' after the establishment of the Free State - in fact, it was very much the other way about as far as the British were concerned. This is why the British offered a truce to Sinn Féin only
after the boundary was in effective operation and the Northern Ireland parliament had come into existence in June 1921.
In short, the British would almost certainly have fúcked Home Rule out the window in order to keep the Unionists (which also meant the military - see the Curragh Mutiny) happy. Violence is the only way they got any semblance of independence.
As for the war, by 1916 there was no realistic possibility of anywhere in the British isles being occupied by Germany - the British fleet was far, far too powerful for that ever to happen, even if the Germans had by some miracle won on land.
Anyway, read this and learn something.
https://www.amazon.co.uk/Fatal-Path-.../dp/0571297404