I don't think this judgement is about Google Analytics (or any implicit sharing of EU citizen/resident data with Google) being inherently illegal, but rather the current functioning of the Google Analytics service being specifically non-compliant.
e.g. Google could make Google Analytics compliant (likely by, as you say, housing EU data in Ireland), but it seems that currently they are not.
Also, beyond the physical colocation of data, there are ancillary issues around data being readily accessible (either by internal engineers/agents or external authorities) from outside the EU to consider as well.
e.g. Google could make Google Analytics compliant (likely by, as you say, housing EU data in Ireland), but it seems that currently they are not.
Also, beyond the physical colocation of data, there are ancillary issues around data being readily accessible (either by internal engineers/agents or external authorities) from outside the EU to consider as well.