Britain attempted to introduce compulsory conscription in Ireland in 1918 - what part of that fact do you have a problem with?

It was passed in April 1918 and would have taken months to implement.
By June 1918 the tide had turned and American troops were pouring in so there was no need to conscript a single Irishman.
Casualties were very light in the final months of the war anyway.

Conscription for the rest of Britain was passed before the rising in March 1916, and Ireland was excluded.

The rising had no bearing on conscription in Ireland.
It would have been opposed in Ireland anyway.