people in this HN thread are claiming "it’s not illegal to use GA entirely, just illegal to use in its default state which transmits PII to the US. " … but reading the Italian DPA’s english press release it seems clear to me that the issue is that they’ve realized that IP anonymization is bullshit and it isn’t really possible to use GA without Google getting your IP.

Note that this google support page clarifies that google’s position is that IP addresses are not PII which is simply at odds with EU law.